diff --git a/README.md b/README.md
index 8b9e044e..70b2707f 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ CowAgent is lightweight, easy to deploy, and built to extend. Plug in any major
 | [Knowledge](https://docs.cowagent.ai/en/knowledge/index) | Auto-curates structured knowledge into a Markdown wiki, builds an evolving knowledge graph with visual browsing |
 | [Skills](https://docs.cowagent.ai/en/skills/index) | One-click install from [Skill Hub](https://skills.cowagent.ai/), GitHub, ClawHub; or create custom skills via natural-language conversation |
 | [Tools](https://docs.cowagent.ai/en/tools/index) | Built-in file I/O, terminal, browser, scheduler, memory retrieval, web search, and 10+ more tools — with native MCP integration |
-| [Channels](https://docs.cowagent.ai/en/channels/index) | Integrates with Web, WeChat, Feishu, DingTalk, WeCom, QQ, and Official Accounts |
+| [Channels](https://docs.cowagent.ai/en/channels/index) | Integrates with Web, WeChat, Feishu, DingTalk, WeCom, QQ, Official Accounts, and Telegram |
 | Multimodal | First-class support for text, images, voice, and files — recognition, generation, and delivery |
 | [Models](https://docs.cowagent.ai/en/models/index) | Claude, GPT, Gemini, DeepSeek, Qwen, GLM, Kimi, MiniMax, Doubao, and more — swap providers from the Web console with one click |
 | [Deploy](https://docs.cowagent.ai/en/guide/quick-start) | One-line installer, unified Web console, multiple deployment modes (local, Docker, server) |
@@ -126,6 +126,7 @@ A single Agent instance can serve multiple channels in parallel. Most channels c
 | [QQ](https://docs.cowagent.ai/en/channels/qq) | ✅ | ✅ | ✅ | | ✅ |
 | [WeCom App](https://docs.cowagent.ai/en/channels/wecom) | ✅ | ✅ | ✅ | ✅ | |
 | [WeChat Official Account](https://docs.cowagent.ai/en/channels/wechatmp) | ✅ | ✅ | | ✅ | |
+| [Telegram](https://docs.cowagent.ai/en/channels/telegram) | ✅ | ✅ | ✅ | ✅ | ✅ |
 
 > See the [Channels overview](https://docs.cowagent.ai/en/channels/index) for setup details.
 
diff --git a/channel/channel_factory.py b/channel/channel_factory.py
index cf6bfea8..fd8cf0e8 100644
--- a/channel/channel_factory.py
+++ b/channel/channel_factory.py
@@ -39,6 +39,9 @@ def create_channel(channel_type) -> Channel:
     elif channel_type == const.QQ:
         from channel.qq.qq_channel import QQChannel
         ch = QQChannel()
+    elif channel_type == const.TELEGRAM:
+        from channel.telegram.telegram_channel import TelegramChannel
+        ch = TelegramChannel()
     elif channel_type in (const.WEIXIN, "wx"):
         from channel.weixin.weixin_channel import WeixinChannel
         ch = WeixinChannel()
diff --git a/channel/telegram/__init__.py b/channel/telegram/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/channel/telegram/telegram_channel.py b/channel/telegram/telegram_channel.py
new file mode 100644
index 00000000..b3b46589
--- /dev/null
+++ b/channel/telegram/telegram_channel.py
@@ -0,0 +1,676 @@
+"""
+Telegram channel via Bot API (long polling mode).
+
+Features:
+- Single chat & group chat (text / photo / voice / video / document)
+- Group trigger: @mention or reply-to-bot (configurable)
+- /cancel fast-path matches Web channel behaviour
+- Auto-register bot commands menu on startup (mirrors Web slash menu)
+- Optional HTTP/SOCKS5 proxy support for restricted networks
+
+Implementation note:
+    python-telegram-bot is async-first. We run the bot inside a dedicated
+    thread with its own asyncio loop so the rest of cow (which is sync)
+    stays untouched. Inbound updates are dispatched onto cow's existing
+    sync ChatChannel.produce() pipeline; outbound send() schedules
+    coroutines back onto that loop via asyncio.run_coroutine_threadsafe.
+"""
+
+import asyncio
+import os
+import re
+import threading
+
+from bridge.context import Context, ContextType
+from bridge.reply import Reply, ReplyType
+from channel.chat_channel import ChatChannel, check_prefix
+from channel.telegram.telegram_message import TelegramMessage
+from common.expired_dict import ExpiredDict
+from common.log import logger
+from common.singleton import singleton
+from config import conf
+
+# Bot command menu, aligned with Web slash commands.
+# Top-level commands only; sub-commands are entered with a space (e.g. "/skill list").
+TELEGRAM_BOT_COMMANDS = [
+    ("help", "Show command help"),
+    ("status", "Show running status"),
+    ("context", "View/clear conversation context (sub: clear)"),
+    ("skill", "Manage skills (list/search/install/...)"),
+    ("memory", "Manage memory (sub: dream)"),
+    ("knowledge", "Manage knowledge base (list/on/off)"),
+    ("config", "Show current config"),
+    ("cancel", "Cancel running agent task"),
+    ("logs", "Show recent logs"),
+    ("version", "Show version"),
+]
+
+
+@singleton
+class TelegramChannel(ChatChannel):
+    NOT_SUPPORT_REPLYTYPE = []
+
+    def __init__(self):
+        super().__init__()
+        self.bot_token = ""
+        self.bot_username = ""  # used for @-mention matching
+        self._bot = None
+        self._application = None
+        self._loop = None
+        self._loop_thread = None
+        self._stop_event = threading.Event()
+        # Idempotent dedup; TG occasionally redelivers the same update on flaky networks
+        self._received_msgs = ExpiredDict(60 * 60 * 1)
+
+        # Disable group whitelist / prefix checks (we handle triggering ourselves
+        # in _should_reply_in_group), aligned with feishu / wecom_bot channels.
+        conf()["group_name_white_list"] = ["ALL_GROUP"]
+        conf()["single_chat_prefix"] = [""]
+
+    # ------------------------------------------------------------------
+    # Lifecycle
+    # ------------------------------------------------------------------
+
+    def startup(self):
+        self.bot_token = conf().get("telegram_token", "")
+        if not self.bot_token:
+            err = "[Telegram] telegram_token is required"
+            logger.error(err)
+            self.report_startup_error(err)
+            return
+
+        try:
+            from telegram.ext import (
+                Application,
+                MessageHandler,
+                CommandHandler,
+                filters,
+            )
+        except ImportError:
+            err = (
+                "[Telegram] python-telegram-bot is not installed. "
+                "Run: pip install python-telegram-bot"
+            )
+            logger.error(err)
+            self.report_startup_error(err)
+            return
+
+        # Run the asyncio event loop in a dedicated thread so the sync cow body
+        # is untouched.
+        self._loop = asyncio.new_event_loop()
+
+        def _run_loop():
+            asyncio.set_event_loop(self._loop)
+            try:
+                self._loop.run_until_complete(self._async_main(Application, MessageHandler, CommandHandler, filters))
+            except Exception as e:
+                logger.error(f"[Telegram] event loop crashed: {e}", exc_info=True)
+                self.report_startup_error(str(e))
+            finally:
+                try:
+                    self._loop.close()
+                except Exception:
+                    pass
+                logger.info("[Telegram] event loop exited")
+
+        self._loop_thread = threading.Thread(target=_run_loop, daemon=True, name="telegram-loop")
+        self._loop_thread.start()
+        # Block startup() until the loop thread exits, matching other channels'
+        # behaviour (startup is a blocking call).
+        self._loop_thread.join()
+
+    async def _async_main(self, Application, MessageHandler, CommandHandler, filters):
+        """Build Application, register handlers, and run polling."""
+        builder = Application.builder().token(self.bot_token)
+
+        # Proxy: prefer telegram_proxy config, fall back to HTTPS_PROXY env var
+        proxy_url = conf().get("telegram_proxy", "") or os.environ.get("HTTPS_PROXY", "")
+        if proxy_url:
+            try:
+                builder = builder.proxy(proxy_url).get_updates_proxy(proxy_url)
+                logger.info(f"[Telegram] using proxy: {proxy_url}")
+            except Exception as e:
+                logger.warning(f"[Telegram] proxy config failed, fallback to direct: {e}")
+
+        # Media uploads (photo/voice/video/document) over a proxy can be slow,
+        # bump read/write/connect/pool timeouts.
+        builder = (
+            builder
+            .read_timeout(60)
+            .write_timeout(120)
+            .connect_timeout(30)
+            .pool_timeout(30)
+        )
+
+        application = builder.build()
+        self._application = application
+        self._bot = application.bot
+
+        # Fetch our own username (needed for @-mention matching in groups)
+        try:
+            me = await self._bot.get_me()
+            self.bot_username = me.username or ""
+            self.name = self.bot_username  # ChatChannel uses self.name to strip @-mention
+            logger.info(f"[Telegram] Bot logged in as @{self.bot_username} (id={me.id})")
+        except Exception as e:
+            err = f"[Telegram] get_me failed: {e}"
+            logger.error(err)
+            self.report_startup_error(err)
+            return
+
+        # Register the command menu (failure is non-fatal)
+        if conf().get("telegram_register_commands", True):
+            try:
+                from telegram import BotCommand
+                cmds = [BotCommand(name, desc) for name, desc in TELEGRAM_BOT_COMMANDS]
+                await self._bot.set_my_commands(cmds)
+                logger.info(f"[Telegram] Registered {len(cmds)} bot commands")
+            except Exception as e:
+                logger.warning(f"[Telegram] set_my_commands failed: {e}")
+
+        # Handlers:
+        # 1) /cancel uses the fast-path
+        application.add_handler(CommandHandler("cancel", self._on_cancel))
+        # 2) Normal messages (text + media)
+        application.add_handler(MessageHandler(filters.ALL & ~filters.COMMAND, self._on_message))
+        # 3) Other slash commands are forwarded as plain text for the agent to handle
+        application.add_handler(MessageHandler(filters.COMMAND, self._on_command_passthrough))
+
+        # Start polling. drop_pending_updates avoids replaying backlog after restart.
+        logger.info("[Telegram] Starting long polling...")
+        await application.initialize()
+        await application.start()
+        await application.updater.start_polling(drop_pending_updates=True)
+        self.report_startup_success()
+        logger.info("[Telegram] ✅ Telegram bot ready, polling for updates")
+
+        # Block until stop()
+        try:
+            while not self._stop_event.is_set():
+                await asyncio.sleep(0.5)
+        finally:
+            try:
+                await application.updater.stop()
+                await application.stop()
+                await application.shutdown()
+            except Exception as e:
+                logger.warning(f"[Telegram] shutdown error: {e}")
+
+    def stop(self):
+        logger.info("[Telegram] stop() called")
+        self._stop_event.set()
+        if self._loop_thread and self._loop_thread.is_alive():
+            try:
+                self._loop_thread.join(timeout=10)
+            except Exception:
+                pass
+        logger.info("[Telegram] stop() completed")
+
+    # ------------------------------------------------------------------
+    # Inbound: telegram update -> ChatMessage -> ChatChannel.produce
+    # ------------------------------------------------------------------
+
+    async def _on_cancel(self, update, _context):
+        """Fast-path: /cancel calls cancel_session directly without going through agent."""
+        try:
+            from agent.protocol import get_cancel_registry
+            session_id = self._compute_session_id(update)
+            cancelled = get_cancel_registry().cancel_session(session_id)
+            text = "Current task cancelled." if cancelled else "No running task to cancel."
+            await update.effective_message.reply_text(text)
+            logger.info(f"[Telegram] /cancel session={session_id}, cancelled={cancelled}")
+        except Exception as e:
+            logger.error(f"[Telegram] /cancel error: {e}", exc_info=True)
+            try:
+                await update.effective_message.reply_text(f"⚠️ /cancel failed: {e}")
+            except Exception:
+                pass
+
+    async def _on_command_passthrough(self, update, _context):
+        """All non-/cancel commands fall through to plain message handling."""
+        await self._on_message(update, _context)
+
+    async def _on_message(self, update, _context):
+        """Telegram update entry: parse message -> build ChatMessage -> produce()."""
+        try:
+            message = update.effective_message
+            chat = update.effective_chat
+            if not message or not chat:
+                return
+
+            # Idempotent dedup
+            msg_uid = f"{chat.id}:{message.message_id}"
+            if self._received_msgs.get(msg_uid):
+                return
+            self._received_msgs[msg_uid] = True
+
+            is_group = chat.type in ("group", "supergroup")
+
+            # Debug log: helpful when group messages are silently dropped
+            if is_group:
+                logger.debug(
+                    f"[Telegram] group update received: chat_id={chat.id}, "
+                    f"text={(message.text or message.caption or '')[:40]!r}, "
+                    f"reply_to_bot={bool(message.reply_to_message and message.reply_to_message.from_user and message.reply_to_message.from_user.username == self.bot_username)}"
+                )
+
+            # Group trigger gate (silently drop if not triggered)
+            if is_group and not self._should_reply_in_group(update):
+                logger.debug(f"[Telegram] group message not triggered (need @{self.bot_username} or reply), skip")
+                return
+
+            # Parse message type + download media if needed.
+            # Media messages with caption return both the local path and the caption text.
+            ctype, content, caption = await self._parse_message(message)
+            if ctype is None:
+                logger.debug(f"[Telegram] unsupported message type, skip. msg={message}")
+                return
+
+            # Strip @bot mention for group text/caption
+            if is_group and self.bot_username:
+                if ctype == ContextType.TEXT and content:
+                    content = self._strip_at_mention(content)
+                if caption:
+                    caption = self._strip_at_mention(caption)
+
+            tg_msg = TelegramMessage(
+                update,
+                is_group=is_group,
+                bot_username=self.bot_username,
+                ctype=ctype,
+                content=content,
+            )
+            tg_msg.is_at = is_group  # If we got here in a group, the bot is mentioned/replied
+
+            # File cache: standalone media goes into cache, the next text query attaches them
+            from channel.file_cache import get_file_cache
+            file_cache = get_file_cache()
+            session_id = self._compute_session_id(update)
+
+            # Media + caption together: treat as a complete query and bypass the cache
+            if ctype in (ContextType.IMAGE, ContextType.FILE) and caption:
+                tag = "image" if ctype == ContextType.IMAGE else "file"
+                merged_text = f"{caption}\n[{tag}: {content}]"
+                tg_msg.ctype = ContextType.TEXT
+                tg_msg.content = merged_text
+                ctype = ContextType.TEXT
+                logger.info(f"[Telegram] Media+caption merged for session {session_id}")
+                # fallthrough to the TEXT branch below
+
+            elif ctype == ContextType.IMAGE:
+                file_cache.add(session_id, content, file_type="image")
+                logger.info(f"[Telegram] Image cached for session {session_id}, waiting for query...")
+                return
+            elif ctype == ContextType.FILE:
+                file_cache.add(session_id, content, file_type="file")
+                logger.info(f"[Telegram] File cached for session {session_id}: {content}")
+                return
+
+            if ctype == ContextType.TEXT:
+                cached_files = file_cache.get(session_id)
+                if cached_files:
+                    refs = []
+                    for fi in cached_files:
+                        ftype = fi["type"]
+                        tag = ftype if ftype in ("image", "video") else "file"
+                        refs.append(f"[{tag}: {fi['path']}]")
+                    tg_msg.content = (tg_msg.content or "") + "\n" + "\n".join(refs)
+                    file_cache.clear(session_id)
+                    logger.info(f"[Telegram] Attached {len(cached_files)} cached file(s) to query")
+
+            # Dispatch to cow main pipeline (reuses ChatChannel._compose_context routing)
+            context = self._compose_context(
+                tg_msg.ctype,
+                tg_msg.content,
+                isgroup=is_group,
+                msg=tg_msg,
+            )
+            if context:
+                context["session_id"] = session_id
+                context["receiver"] = str(chat.id)
+                context["telegram_chat_id"] = chat.id
+                context["telegram_reply_to_msg_id"] = message.message_id if is_group else None
+                self.produce(context)
+            logger.debug(f"[Telegram] received: type={ctype}, content={str(tg_msg.content)[:80]}")
+
+        except Exception as e:
+            logger.error(f"[Telegram] _on_message error: {e}", exc_info=True)
+
+    async def _parse_message(self, message):
+        """Parse a telegram message and return (ctype, content, caption).
+
+        - content is text for ContextType.TEXT, otherwise the local file path
+        - caption is the optional text accompanying a media message; empty for plain text
+        """
+        caption = (message.caption or "").strip()
+
+        if message.photo:
+            largest = message.photo[-1]
+            path = await self._download_file(largest.file_id, suffix=".jpg")
+            return (ContextType.IMAGE, path, caption) if path else (None, None, "")
+
+        if message.voice or message.audio:
+            audio_obj = message.voice or message.audio
+            suffix = ".ogg" if message.voice else (
+                "." + (audio_obj.mime_type.split("/")[-1] if getattr(audio_obj, "mime_type", "") else "mp3")
+            )
+            path = await self._download_file(audio_obj.file_id, suffix=suffix)
+            return (ContextType.VOICE, path, caption) if path else (None, None, "")
+
+        if message.video or message.video_note:
+            video_obj = message.video or message.video_note
+            path = await self._download_file(video_obj.file_id, suffix=".mp4")
+            return (ContextType.FILE, path, caption) if path else (None, None, "")
+
+        if message.document:
+            doc = message.document
+            ext = ""
+            if doc.file_name and "." in doc.file_name:
+                ext = "." + doc.file_name.rsplit(".", 1)[-1]
+            path = await self._download_file(doc.file_id, suffix=ext, original_name=doc.file_name)
+            if not path:
+                return (None, None, "")
+            # Image-typed documents (user picked "send as file") are treated as images
+            mime = (doc.mime_type or "").lower()
+            if mime.startswith("image/"):
+                return (ContextType.IMAGE, path, caption)
+            return (ContextType.FILE, path, caption)
+
+        if message.text:
+            return (ContextType.TEXT, message.text.strip(), "")
+
+        return (None, None, "")
+
+    async def _download_file(self, file_id: str, suffix: str = "", original_name: str = ""):
+        """Download via bot.get_file into the local tmp dir; return path or None on failure."""
+        try:
+            f = await self._bot.get_file(file_id)
+            tmp_dir = TelegramMessage.get_tmp_dir()
+            base = original_name or f"{file_id}{suffix or ''}"
+            # Prefix with file_id to avoid name collisions / weird chars
+            safe_name = f"{file_id}_{base}" if original_name else base
+            local_path = os.path.join(tmp_dir, safe_name)
+            await f.download_to_drive(custom_path=local_path)
+            logger.debug(f"[Telegram] downloaded file_id={file_id} -> {local_path}")
+            return local_path
+        except Exception as e:
+            logger.error(f"[Telegram] download_file failed (file_id={file_id}): {e}")
+            return None
+
+    # ------------------------------------------------------------------
+    # Group trigger logic
+    # ------------------------------------------------------------------
+
+    def _should_reply_in_group(self, update) -> bool:
+        """Decide whether to reply to a group message based on configuration."""
+        mode = conf().get("telegram_group_trigger", "mention_or_reply")
+        if mode == "all":
+            return True
+
+        message = update.effective_message
+        if not message:
+            return False
+
+        # 1) Mentioned
+        if self.bot_username and self._is_mentioned(message, self.bot_username):
+            return True
+
+        # 2) Reply to a bot message
+        if mode == "mention_or_reply":
+            reply = message.reply_to_message
+            if reply and reply.from_user and reply.from_user.username == self.bot_username:
+                return True
+
+        return False
+
+    @staticmethod
+    def _is_mentioned(message, bot_username: str) -> bool:
+        """Check whether entities/caption_entities contain a @mention of the bot."""
+        bot_at = "@" + bot_username.lower()
+        text = (message.text or message.caption or "").lower()
+        if bot_at in text:
+            return True
+        # Also check entities strictly to support text_mention (no-username @)
+        for ent in (message.entities or []) + (message.caption_entities or []):
+            if ent.type == "mention":
+                src = message.text or message.caption or ""
+                if src[ent.offset: ent.offset + ent.length].lower() == bot_at:
+                    return True
+        return False
+
+    def _strip_at_mention(self, content: str) -> str:
+        """Strip @bot_username from group text (case-insensitive)."""
+        if not content or not self.bot_username:
+            return content
+        pattern = re.compile(r"@" + re.escape(self.bot_username), re.IGNORECASE)
+        return pattern.sub("", content).strip()
+
+    @staticmethod
+    def _compute_session_id(update) -> str:
+        chat = update.effective_chat
+        user = update.effective_user
+        is_group = chat.type in ("group", "supergroup")
+        if is_group:
+            if conf().get("group_shared_session", True):
+                return f"tg_group_{chat.id}"
+            return f"tg_group_{chat.id}_{user.id}"
+        return f"tg_user_{user.id}"
+
+    # ------------------------------------------------------------------
+    # Override _compose_context: skip the parent's group whitelist/at checks
+    # (already handled in _on_message via _should_reply_in_group). Same idea
+    # as the feishu channel.
+    # ------------------------------------------------------------------
+
+    def _compose_context(self, ctype: ContextType, content, **kwargs):
+        context = Context(ctype, content)
+        context.kwargs = kwargs
+        if "channel_type" not in context:
+            context["channel_type"] = self.channel_type
+        if "origin_ctype" not in context:
+            context["origin_ctype"] = ctype
+
+        cmsg = context["msg"]
+        if cmsg.is_group:
+            if conf().get("group_shared_session", True):
+                context["session_id"] = cmsg.other_user_id
+            else:
+                context["session_id"] = f"{cmsg.from_user_id}:{cmsg.other_user_id}"
+        else:
+            context["session_id"] = cmsg.from_user_id
+        context["receiver"] = cmsg.other_user_id
+
+        if ctype == ContextType.TEXT:
+            img_match_prefix = check_prefix(content, conf().get("image_create_prefix"))
+            if img_match_prefix:
+                content = content.replace(img_match_prefix, "", 1)
+                context.type = ContextType.IMAGE_CREATE
+            else:
+                context.type = ContextType.TEXT
+            context.content = (content or "").strip()
+            if "desire_rtype" not in context and conf().get("always_reply_voice"):
+                context["desire_rtype"] = ReplyType.VOICE
+        elif ctype == ContextType.VOICE:
+            if "desire_rtype" not in context and (
+                conf().get("voice_reply_voice") or conf().get("always_reply_voice")
+            ):
+                context["desire_rtype"] = ReplyType.VOICE
+
+        return context
+
+    # ------------------------------------------------------------------
+    # Outbound: ChatChannel.send -> Telegram API
+    # ------------------------------------------------------------------
+
+    def send(self, reply: Reply, context: Context):
+        """Called from cow's sync main thread; we marshal the coroutine onto the loop thread."""
+        if self._loop is None or self._bot is None:
+            logger.warning("[Telegram] bot not ready, drop reply")
+            return
+
+        chat_id = context.get("telegram_chat_id")
+        reply_to = context.get("telegram_reply_to_msg_id")
+        if chat_id is None:
+            logger.warning("[Telegram] no telegram_chat_id in context, drop reply")
+            return
+
+        coro = self._async_send(reply, chat_id, reply_to)
+        try:
+            future = asyncio.run_coroutine_threadsafe(coro, self._loop)
+            # Media uploads through a proxy can be slow; let PTB's own timeouts win
+            future.result(timeout=180)
+        except Exception as e:
+            logger.error(f"[Telegram] send failed: {e}")
+
+    # Number of retries for transient network errors (proxy hiccups etc.)
+    _SEND_RETRIES = 2
+    _SEND_RETRY_BACKOFF = 2.0  # seconds
+
+    async def _send_with_retry(self, send_fn, *, label: str):
+        """Run a single Telegram API call with retries for transient network errors."""
+        from telegram.error import NetworkError, TimedOut
+        last_err = None
+        for attempt in range(self._SEND_RETRIES + 1):
+            try:
+                return await send_fn()
+            except (NetworkError, TimedOut) as e:
+                last_err = e
+                if attempt >= self._SEND_RETRIES:
+                    break
+                wait = self._SEND_RETRY_BACKOFF * (attempt + 1)
+                logger.warning(
+                    f"[Telegram] {label} transient error (attempt {attempt + 1}/"
+                    f"{self._SEND_RETRIES + 1}): {e}; retry in {wait}s"
+                )
+                await asyncio.sleep(wait)
+        raise last_err
+
+    async def _async_send(self, reply: Reply, chat_id, reply_to_msg_id):
+        try:
+            rtype = reply.type
+            content = reply.content
+
+            if rtype == ReplyType.TEXT or rtype == ReplyType.INFO or rtype == ReplyType.ERROR:
+                # Telegram caps a single text message at 4096 chars; auto-split
+                text = str(content) if content is not None else ""
+                if not text:
+                    return
+                for chunk in _split_text(text, 4000):
+                    await self._send_with_retry(
+                        lambda c=chunk: self._bot.send_message(
+                            chat_id=chat_id,
+                            text=c,
+                            reply_to_message_id=reply_to_msg_id,
+                            # Avoid failing the whole send if reply_to was deleted
+                            allow_sending_without_reply=True,
+                        ),
+                        label="send_message",
+                    )
+
+            elif rtype == ReplyType.IMAGE:
+                # Already a local BytesIO; send it directly
+                content.seek(0)
+                await self._send_with_retry(
+                    lambda: self._bot.send_photo(
+                        chat_id=chat_id,
+                        photo=content,
+                        reply_to_message_id=reply_to_msg_id,
+                        allow_sending_without_reply=True,
+                    ),
+                    label="send_photo",
+                )
+
+            elif rtype == ReplyType.IMAGE_URL:
+                url = str(content)
+                if url.startswith("file://"):
+                    local = url[7:]
+                    # Open inside the lambda so each retry gets a fresh stream
+                    async def _send_local_photo():
+                        with open(local, "rb") as f:
+                            return await self._bot.send_photo(
+                                chat_id=chat_id, photo=f,
+                                reply_to_message_id=reply_to_msg_id,
+                                allow_sending_without_reply=True,
+                            )
+                    await self._send_with_retry(_send_local_photo, label="send_photo(file)")
+                else:
+                    await self._send_with_retry(
+                        lambda: self._bot.send_photo(
+                            chat_id=chat_id, photo=url,
+                            reply_to_message_id=reply_to_msg_id,
+                            allow_sending_without_reply=True,
+                        ),
+                        label="send_photo(url)",
+                    )
+
+            elif rtype == ReplyType.VOICE:
+                local = content[7:] if isinstance(content, str) and content.startswith("file://") else content
+                async def _send_voice():
+                    with open(local, "rb") as f:
+                        return await self._bot.send_voice(
+                            chat_id=chat_id, voice=f,
+                            reply_to_message_id=reply_to_msg_id,
+                            allow_sending_without_reply=True,
+                        )
+                await self._send_with_retry(_send_voice, label="send_voice")
+
+            elif rtype == ReplyType.FILE:
+                # Videos go through send_video, everything else through send_document
+                local = content[7:] if isinstance(content, str) and content.startswith("file://") else content
+                # File replies may carry an accompanying text caption
+                caption = getattr(reply, "text_content", None) or None
+                is_video = isinstance(local, str) and local.lower().endswith(
+                    (".mp4", ".mov", ".avi", ".mkv", ".webm")
+                )
+
+                async def _send_file():
+                    with open(local, "rb") as f:
+                        if is_video:
+                            return await self._bot.send_video(
+                                chat_id=chat_id, video=f, caption=caption,
+                                reply_to_message_id=reply_to_msg_id,
+                                allow_sending_without_reply=True,
+                            )
+                        return await self._bot.send_document(
+                            chat_id=chat_id, document=f, caption=caption,
+                            reply_to_message_id=reply_to_msg_id,
+                            allow_sending_without_reply=True,
+                        )
+                await self._send_with_retry(_send_file, label="send_video" if is_video else "send_document")
+
+            else:
+                # Fallback: send as plain text
+                await self._send_with_retry(
+                    lambda: self._bot.send_message(
+                        chat_id=chat_id, text=str(content),
+                        reply_to_message_id=reply_to_msg_id,
+                        allow_sending_without_reply=True,
+                    ),
+                    label="send_message(fallback)",
+                )
+
+            logger.info(f"[Telegram] sent reply (type={rtype}, chat_id={chat_id})")
+
+        except Exception as e:
+            logger.error(f"[Telegram] _async_send error: {e}", exc_info=True)
+
+
+def _split_text(text: str, limit: int):
+    """Split long text preferring line breaks to keep markdown structure intact."""
+    if len(text) <= limit:
+        yield text
+        return
+    buf = []
+    size = 0
+    for line in text.splitlines(keepends=True):
+        if size + len(line) > limit and buf:
+            yield "".join(buf)
+            buf, size = [], 0
+        # Hard-split single lines that exceed the limit
+        while len(line) > limit:
+            yield line[:limit]
+            line = line[limit:]
+        buf.append(line)
+        size += len(line)
+    if buf:
+        yield "".join(buf)
diff --git a/channel/telegram/telegram_message.py b/channel/telegram/telegram_message.py
new file mode 100644
index 00000000..c97c6059
--- /dev/null
+++ b/channel/telegram/telegram_message.py
@@ -0,0 +1,62 @@
+"""
+Telegram message adapter.
+
+Convert a python-telegram-bot Update into cow's unified ChatMessage.
+File downloads are NOT performed here; the channel layer triggers
+bot.get_file() on demand because it requires the async event loop.
+"""
+import os
+
+from bridge.context import ContextType
+from channel.chat_message import ChatMessage
+from common.utils import expand_path
+from config import conf
+
+
+class TelegramMessage(ChatMessage):
+    """Wrap a Telegram Update into the unified ChatMessage."""
+
+    def __init__(self, update, is_group: bool = False, bot_username: str = "",
+                 ctype: ContextType = ContextType.TEXT, content: str = ""):
+        super().__init__(update)
+        message = update.effective_message
+        chat = update.effective_chat
+        user = update.effective_user
+
+        # Basic fields
+        self.msg_id = str(message.message_id) if message else ""
+        self.create_time = int(message.date.timestamp()) if message and message.date else 0
+        self.ctype = ctype
+        self.content = content
+
+        # Sender / chat info
+        from_user_id = str(user.id) if user else "unknown"
+        from_user_nick = (
+            user.full_name if user and user.full_name else (user.username if user else "unknown")
+        )
+        self.from_user_id = from_user_id
+        self.from_user_nickname = from_user_nick or from_user_id
+        self.to_user_id = bot_username or "telegram_bot"
+        self.to_user_nickname = bot_username or "telegram_bot"
+
+        self.is_group = is_group
+        if is_group:
+            # Group: other_user_id = group_id, actual_user_id = sender id
+            self.other_user_id = str(chat.id)
+            self.other_user_nickname = chat.title or str(chat.id)
+            self.actual_user_id = from_user_id
+            self.actual_user_nickname = self.from_user_nickname
+        else:
+            self.other_user_id = from_user_id
+            self.other_user_nickname = self.from_user_nickname
+
+        # Whether the bot was triggered by @-mention or reply (set by channel layer)
+        self.is_at = False
+
+    @staticmethod
+    def get_tmp_dir() -> str:
+        """Local download directory, aligned with other channels (agent_workspace/tmp)."""
+        workspace_root = expand_path(conf().get("agent_workspace", "~/cow"))
+        tmp_dir = os.path.join(workspace_root, "tmp")
+        os.makedirs(tmp_dir, exist_ok=True)
+        return tmp_dir
diff --git a/channel/web/web_channel.py b/channel/web/web_channel.py
index af4e241e..57891855 100644
--- a/channel/web/web_channel.py
+++ b/channel/web/web_channel.py
@@ -2909,6 +2909,14 @@ class ChannelsHandler:
                 {"key": "wechatmp_port", "label": "Port", "type": "number", "default": 8080},
             ],
         }),
+        ("telegram", {
+            "label": {"zh": "Telegram", "en": "Telegram"},
+            "icon": "fa-paper-plane",
+            "color": "sky",
+            "fields": [
+                {"key": "telegram_token", "label": "Bot Token", "type": "secret"},
+            ],
+        }),
     ])
 
     @staticmethod
diff --git a/common/const.py b/common/const.py
index 7addd6af..4daea457 100644
--- a/common/const.py
+++ b/common/const.py
@@ -243,3 +243,4 @@ DINGTALK = "dingtalk"
 WECOM_BOT = "wecom_bot"
 QQ = "qq"
 WEIXIN = "weixin"
+TELEGRAM = "telegram"
diff --git a/config.py b/config.py
index 1d44dcc5..cf8f43fe 100644
--- a/config.py
+++ b/config.py
@@ -166,6 +166,11 @@ available_setting = {
     # 企微智能机器人配置(长连接模式)
     "wecom_bot_id": "",  # 企微智能机器人BotID
     "wecom_bot_secret": "",  # 企微智能机器人长连接Secret
+    # Telegram 配置
+    "telegram_token": "",  # 从 @BotFather 申请的 bot token
+    "telegram_proxy": "",  # 可选的 HTTP/SOCKS5 代理，例如 http://127.0.0.1:7890 或 socks5://127.0.0.1:1080（留空则走系统环境变量）
+    "telegram_group_trigger": "mention_or_reply",  # 群聊触发方式: mention_or_reply(@或回复触发,推荐) | mention_only(仅@) | all(所有消息)
+    "telegram_register_commands": True,  # 启动时是否自动向 BotFather 注册命令菜单（与 web 端 slash 命令一致）
     # 微信配置
     "weixin_token": "",  # 微信登录后获取的bot_token，留空则启动时自动扫码登录
     "weixin_base_url": "https://ilinkai.weixin.qq.com",  # Weixin ilink API base URL
@@ -174,7 +179,7 @@ available_setting = {
     # chatgpt指令自定义触发词
     "clear_memory_commands": ["#清除记忆"],  # 重置会话指令，必须以#开头
     # channel配置
-    "channel_type": "",  # 通道类型，支持多渠道同时运行。单个: "feishu"，多个: "feishu, dingtalk" 或 ["feishu", "dingtalk"]。可选值: web,feishu,dingtalk,wecom_bot,weixin,wechatmp,wechatmp_service,wechatcom_app
+    "channel_type": "",  # 通道类型，支持多渠道同时运行。单个: "feishu"，多个: "feishu, dingtalk" 或 ["feishu", "dingtalk"]。可选值: web,feishu,dingtalk,wecom_bot,weixin,wechatmp,wechatmp_service,wechatcom_app,telegram
     "web_console": True,  # 是否自动启动Web控制台（默认启动）。设为False可禁用
     "subscribe_msg": "",  # 订阅消息, 支持: wechatmp, wechatmp_service, wechatcom_app
     "debug": False,  # 是否开启debug模式，开启后会打印更多日志
diff --git a/docs/channels/index.mdx b/docs/channels/index.mdx
index 9049a51d..5d3fffdc 100644
--- a/docs/channels/index.mdx
+++ b/docs/channels/index.mdx
@@ -19,6 +19,7 @@ CowAgent 支持接入多种聊天通道，启动时通过 `channel_type` 切换
 | [QQ](/channels/qq) | ✅ | ✅ | ✅ | | ✅ |
 | [企业微信应用](/channels/wecom) | ✅ | ✅ | ✅ | ✅ | |
 | [公众号](/channels/wechatmp) | ✅ | ✅ | | ✅ | |
+| [Telegram](/channels/telegram) | ✅ | ✅ | ✅ | ✅ | ✅ |
 
 - **图片 / 文件 / 语音**列表示通道支持收发对应消息类型，具体细节详见各通道文档
 - **群聊**列指可识别并响应群消息
@@ -37,3 +38,4 @@ CowAgent 支持接入多种聊天通道，启动时通过 `channel_type` 切换
 - [QQ](/channels/qq) — QQ 官方机器人开放平台
 - [企业微信应用](/channels/wecom) — 企业微信自建应用接入
 - [公众号](/channels/wechatmp) — 微信公众号（订阅号 / 服务号）
+- [Telegram](/channels/telegram) — 海外 IM，5 分钟接入，无需公网 IP
diff --git a/docs/channels/telegram.mdx b/docs/channels/telegram.mdx
new file mode 100644
index 00000000..d7ab7a44
--- /dev/null
+++ b/docs/channels/telegram.mdx
@@ -0,0 +1,112 @@
+---
+title: Telegram
+description: 将 CowAgent 接入 Telegram Bot
+---
+
+> 通过 Telegram Bot API 接入 CowAgent，支持单聊与群聊（@机器人 / 回复机器人触发），使用 Long Polling 模式无需公网 IP，开箱即用。
+
+
+## 一、接入步骤
+
+### 步骤一：通过 BotFather 创建 Bot
+
+1. 在 Telegram 中搜索并打开官方账号 [@BotFather](https://t.me/BotFather)。
+2. 发送 `/newbot` 命令，按提示输入：
+   - **Bot 名称**（显示名，可中文，例如 `My CowAgent Bot`）
+   - **Bot 用户名**（必须以 `bot` 结尾，例如 `my_cowagent_bot`）
+3. 创建成功后，BotFather 会返回一段 **HTTP API Token**（形如 `123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ`），妥善保存。
+
+<Tip>
+  这个 Token 等同于 Bot 的密码，请勿泄露。如果意外泄漏可向 `@BotFather` 发送 `/revoke` 重置。
+</Tip>
+
+### 步骤二：（群聊使用）关闭 Privacy Mode
+
+仅使用单聊可跳过此步。Telegram Bot 默认开启 **Privacy Mode**，群聊中只能收到带 `@bot` 的命令（如 `/start@your_bot`）以及对 bot 消息的 reply；**普通的 `@bot 你好` 文字消息收不到**，会导致群聊无响应。
+
+向 `@BotFather` 发送：
+
+1. `/setprivacy`
+2. 选择刚才创建的 bot
+3. 选择 `Disable`
+
+<Note>
+  若设置后群聊仍无响应，可尝试把 Bot 从群里移除并重新拉入。
+</Note>
+
+### 步骤三：接入 CowAgent
+
+<Tabs>
+  <Tab title="Web 控制台（推荐）">
+    打开 Web 控制台（本地链接：http://127.0.0.1:9899 ），选择 **通道** 菜单，点击 **接入通道**，选择 **Telegram**，填入 Bot Token，点击接入即可。
+  </Tab>
+  <Tab title="配置文件">
+    在 `config.json` 中添加以下配置后启动：
+
+    ```json
+    {
+      "channel_type": "telegram",
+      "telegram_token": "123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ",
+      "telegram_group_trigger": "mention_or_reply"
+    }
+    ```
+
+    | 参数 | 说明 | 默认值 |
+    | --- | --- | --- |
+    | `telegram_token` | BotFather 返回的 HTTP API Token | - |
+    | `telegram_group_trigger` | 群聊触发方式：`mention_or_reply`（@或回复机器人）/ `mention_only`（仅@） / `all`（所有消息） | `mention_or_reply` |
+    | `telegram_register_commands` | 启动时是否自动向 BotFather 注册命令菜单 | `true` |
+    | `telegram_proxy` | （可选）代理地址，如 `http://127.0.0.1:7890`、`socks5://127.0.0.1:1080`；运行环境无法直连 `api.telegram.org` 时配置，留空则使用环境变量 `HTTPS_PROXY` | `""` |
+  </Tab>
+</Tabs>
+
+启动 Cow 后，日志中出现以下输出即表示接入成功：
+
+```
+[Telegram] Bot logged in as @my_cowagent_bot (id=123456789)
+[Telegram] Registered 10 bot commands
+[Telegram] ✅ Telegram bot ready, polling for updates
+```
+
+## 二、功能说明
+
+| 功能 | 支持情况 |
+| --- | --- |
+| 单聊 | ✅ |
+| 群聊（@机器人 / 回复机器人） | ✅ |
+| 文本消息 | ✅ 收发 |
+| 图片消息 | ✅ 收发 |
+| 语音消息 | ✅ 收发（接收 OGG/Opus，发送 OGG/Opus） |
+| 视频消息 | ✅ 收发 |
+| 文件消息 | ✅ 收发（PDF / Word / Excel 等） |
+| 命令菜单 | ✅ 与 Web 控制台 slash 命令一致 |
+
+### 命令菜单
+
+启动时会自动向 BotFather 注册命令菜单，用户在 Telegram 输入框输入 `/` 会出现下拉提示：
+
+| 命令 | 说明 |
+| --- | --- |
+| `/help` | 显示命令帮助 |
+| `/status` | 查看运行状态 |
+| `/context` | 查看对话上下文（`/context clear` 清除） |
+| `/skill` | 技能管理（`/skill list`、`/skill install` 等） |
+| `/memory` | 记忆管理（`/memory dream`） |
+| `/knowledge` | 知识库管理（`/knowledge list` / `on` / `off`） |
+| `/config` | 查看当前配置 |
+| `/cancel` | 中止当前正在运行的 Agent 任务 |
+| `/logs` | 查看最近日志 |
+| `/version` | 查看版本 |
+
+<Note>
+  Telegram 命令菜单只能展示一级命令，子命令通过空格输入即可，例如 `/skill list`、`/context clear`。
+</Note>
+
+## 三、使用
+
+完成接入后：
+
+- **单聊**：在 Telegram 中搜索你创建的 Bot 用户名（如 `@my_cowagent_bot`），点击 `Start` 即可开始对话。
+- **群聊**：把 Bot 拉进群，使用 `@bot 你好` 或 **回复 Bot 的某条消息** 触发对话。若群聊无响应，请检查 Privacy Mode 是否已按 [步骤二](#步骤二-群聊使用-关闭-privacy-mode) 关闭。
+
+发送图片或文件时，可以直接在附件上方的输入框中 **添加 Caption**（描述/问题）一并发送，机器人会结合附件回答。也支持先发附件再发问题，两条消息会自动合并提问。
diff --git a/docs/docs.json b/docs/docs.json
index e2826887..93c3aa37 100644
--- a/docs/docs.json
+++ b/docs/docs.json
@@ -196,7 +196,8 @@
                   "channels/wecom-bot",
                   "channels/qq",
                   "channels/wecom",
-                  "channels/wechatmp"
+                  "channels/wechatmp",
+                  "channels/telegram"
                 ]
               }
             ]
@@ -399,7 +400,8 @@
                   "en/channels/wecom-bot",
                   "en/channels/qq",
                   "en/channels/wecom",
-                  "en/channels/wechatmp"
+                  "en/channels/wechatmp",
+                  "en/channels/telegram"
                 ]
               }
             ]
@@ -602,7 +604,8 @@
                   "ja/channels/wecom-bot",
                   "ja/channels/qq",
                   "ja/channels/wecom",
-                  "ja/channels/wechatmp"
+                  "ja/channels/wechatmp",
+                  "ja/channels/telegram"
                 ]
               }
             ]
diff --git a/docs/en/channels/index.mdx b/docs/en/channels/index.mdx
index 41fc3230..3533b0d3 100644
--- a/docs/en/channels/index.mdx
+++ b/docs/en/channels/index.mdx
@@ -19,6 +19,7 @@ The table below summarizes the inbound message types, bot reply types, and group
 | [QQ](/en/channels/qq) | ✅ | ✅ | ✅ | | ✅ |
 | [WeCom App](/en/channels/wecom) | ✅ | ✅ | ✅ | ✅ | |
 | [Official Account](/en/channels/wechatmp) | ✅ | ✅ | | ✅ | |
+| [Telegram](/en/channels/telegram) | ✅ | ✅ | ✅ | ✅ | ✅ |
 
 - The **Image / File / Voice** columns indicate that the channel can send and receive the corresponding message types; see each channel's docs for details
 - The **Group Chat** column indicates the ability to recognize and respond to group messages
@@ -37,3 +38,4 @@ The table below summarizes the inbound message types, bot reply types, and group
 - [QQ](/en/channels/qq) — QQ Official Bot open platform
 - [WeCom App](/en/channels/wecom) — WeCom custom app integration
 - [Official Account](/en/channels/wechatmp) — WeChat Official Account (subscription / service)
+- [Telegram](/en/channels/telegram) — global IM, 5-minute setup, no public IP needed
diff --git a/docs/en/channels/telegram.mdx b/docs/en/channels/telegram.mdx
new file mode 100644
index 00000000..f90da992
--- /dev/null
+++ b/docs/en/channels/telegram.mdx
@@ -0,0 +1,111 @@
+---
+title: Telegram
+description: Integrate CowAgent with Telegram via the Bot API
+---
+
+> Integrate CowAgent into Telegram via the official Bot API. Supports private chat and group chat (triggered by @mention or replying to the bot). Uses Long Polling — no public IP required, works out of the box.
+
+
+## 1. Setup
+
+### Step 1: Create a Bot via BotFather
+
+1. Open the official account [@BotFather](https://t.me/BotFather) in Telegram.
+2. Send `/newbot` and follow the prompts:
+   - **Bot name** (display name, e.g. `My CowAgent Bot`)
+   - **Bot username** (must end with `bot`, e.g. `my_cowagent_bot`)
+3. Once created, BotFather returns an **HTTP API Token** (e.g. `123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ`). Keep it safe.
+
+<Tip>
+  The token is the password of your bot — never share it. If it leaks, send `/revoke` to `@BotFather` to reset it.
+</Tip>
+
+### Step 2: (Group chat only) Disable Privacy Mode
+
+Skip this step if you only use private chat. Telegram bots run in **Privacy Mode** by default — in groups they can only see commands suffixed with `@bot` (e.g. `/start@your_bot`) and replies to bot messages; **plain `@bot hello` text messages are not delivered**, so the bot will appear unresponsive in groups.
+
+Send the following to `@BotFather`:
+
+1. `/setprivacy`
+2. Pick the bot you just created
+3. Choose `Disable`
+
+<Note>
+  If the bot is still silent in groups after this, try removing it from the group and adding it back.
+</Note>
+
+### Step 3: Connect to CowAgent
+
+<Tabs>
+  <Tab title="Web Console (Recommended)">
+    Open the Web Console (default `http://127.0.0.1:9899`), go to **Channels**, click **Add Channel**, choose **Telegram**, paste the Bot Token, and click connect.
+  </Tab>
+  <Tab title="Config File">
+    Add the following to `config.json` and start Cow:
+
+    ```json
+    {
+      "channel_type": "telegram",
+      "telegram_token": "123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ",
+      "telegram_group_trigger": "mention_or_reply"
+    }
+    ```
+
+    | Key | Description | Default |
+    | --- | --- | --- |
+    | `telegram_token` | HTTP API Token returned by BotFather | - |
+    | `telegram_group_trigger` | Group trigger: `mention_or_reply` (@ or reply) / `mention_only` (@ only) / `all` (all messages) | `mention_or_reply` |
+    | `telegram_register_commands` | Whether to register the command menu with BotFather on startup | `true` |
+  </Tab>
+</Tabs>
+
+The integration is ready when you see logs like:
+
+```
+[Telegram] Bot logged in as @my_cowagent_bot (id=123456789)
+[Telegram] Registered 10 bot commands
+[Telegram] ✅ Telegram bot ready, polling for updates
+```
+
+## 2. Capabilities
+
+| Feature | Support |
+| --- | --- |
+| Private chat | ✅ |
+| Group chat (@bot / reply to bot) | ✅ |
+| Text messages | ✅ send / receive |
+| Image messages | ✅ send / receive |
+| Voice messages | ✅ send / receive (OGG/Opus) |
+| Video messages | ✅ send / receive |
+| File messages | ✅ send / receive (PDF / Word / Excel, etc.) |
+| Command menu | ✅ aligned with Web Console slash commands |
+
+### Command Menu
+
+On startup, the channel registers a command menu with BotFather. Typing `/` in Telegram shows a dropdown:
+
+| Command | Description |
+| --- | --- |
+| `/help` | Show command help |
+| `/status` | View runtime status |
+| `/context` | View conversation context (`/context clear` to clear) |
+| `/skill` | Skill management (`/skill list`, `/skill install`, ...) |
+| `/memory` | Memory management (`/memory dream`) |
+| `/knowledge` | Knowledge base (`/knowledge list` / `on` / `off`) |
+| `/config` | View current config |
+| `/cancel` | Cancel the running Agent task |
+| `/logs` | View recent logs |
+| `/version` | Show version |
+
+<Note>
+  Telegram's command menu only displays top-level commands; subcommands are entered with a space, e.g. `/skill list`, `/context clear`.
+</Note>
+
+## 3. Usage
+
+Once connected:
+
+- **Private chat**: search for your bot username (e.g. `@my_cowagent_bot`) in Telegram, click `Start` and chat away.
+- **Group chat**: add the bot to a group, then trigger it with `@bot hello` or by **replying to one of the bot's messages**. If the bot doesn't respond in groups, double-check Privacy Mode in [Step 2](#step-2-group-chat-only-disable-privacy-mode).
+
+When sending an image or file, you can **add a caption** (description / question) directly in the attachment input — the bot will answer based on both. Sending an attachment first and then a follow-up question also works; the two messages are merged automatically.
diff --git a/docs/ja/README.md b/docs/ja/README.md
index df71ec74..69beb6ba 100644
--- a/docs/ja/README.md
+++ b/docs/ja/README.md
@@ -30,7 +30,7 @@ CowAgent は軽量でデプロイしやすく、拡張性に優れています
 | [ナレッジベース](https://docs.cowagent.ai/ja/knowledge/index) | 構造化された知識を Markdown Wiki として自動整理し、進化し続けるナレッジグラフを可視化ブラウジング |
 | [Skill](https://docs.cowagent.ai/ja/skills/index) | [Skill Hub](https://skills.cowagent.ai/)、GitHub、ClawHub からワンクリックでインストール；対話によるカスタム Skill 作成にも対応 |
 | [ツール](https://docs.cowagent.ai/ja/tools/index) | ファイル I/O、ターミナル、ブラウザ、スケジューラ、記憶検索、Web 検索など 10+ の組み込みツール — MCP プロトコルに完全対応 |
-| [チャネル](https://docs.cowagent.ai/ja/channels/index) | 一つの Agent で Web、WeChat、Feishu、DingTalk、WeCom、QQ、公式アカウントを同時にサポート |
+| [チャネル](https://docs.cowagent.ai/ja/channels/index) | 一つの Agent で Web、WeChat、Feishu、DingTalk、WeCom、QQ、公式アカウント、Telegram を同時にサポート |
 | マルチモーダル | テキスト・画像・音声・ファイルをフルサポート — 認識・生成・双方向送受信 |
 | [モデル](https://docs.cowagent.ai/ja/models/index) | Claude、GPT、Gemini、DeepSeek、GLM、Qwen、Kimi、MiniMax、Doubao など、設定 1 行で切り替え可能 |
 | [デプロイ](https://docs.cowagent.ai/ja/guide/quick-start) | ワンラインインストーラー、統合された Web コンソール、複数のデプロイモード（ローカル / Docker / サーバー） |
@@ -126,6 +126,7 @@ CowAgent は主要な LLM プロバイダーすべてに対応しています。
 | [QQ](https://docs.cowagent.ai/ja/channels/qq) | ✅ | ✅ | ✅ | | ✅ |
 | [WeCom App](https://docs.cowagent.ai/ja/channels/wecom) | ✅ | ✅ | ✅ | ✅ | |
 | [WeChat 公式アカウント](https://docs.cowagent.ai/ja/channels/wechatmp) | ✅ | ✅ | | ✅ | |
+| [Telegram](https://docs.cowagent.ai/ja/channels/telegram) | ✅ | ✅ | ✅ | ✅ | ✅ |
 
 > Feishu と WeCom Bot は **Web コンソール内で QR コードをスキャンするだけで接続**できます — パブリック IP は不要です。詳細は [チャネル概要](https://docs.cowagent.ai/ja/channels/index) を参照してください。
 
diff --git a/docs/ja/channels/index.mdx b/docs/ja/channels/index.mdx
index 93774e73..ac6a5acf 100644
--- a/docs/ja/channels/index.mdx
+++ b/docs/ja/channels/index.mdx
@@ -19,6 +19,7 @@ CowAgent は複数のチャットチャネルへの接続に対応しており
 | [QQ](/ja/channels/qq) | ✅ | ✅ | ✅ | | ✅ |
 | [WeCom アプリ](/ja/channels/wecom) | ✅ | ✅ | ✅ | ✅ | |
 | [WeChat 公式アカウント](/ja/channels/wechatmp) | ✅ | ✅ | | ✅ | |
+| [Telegram](/ja/channels/telegram) | ✅ | ✅ | ✅ | ✅ | ✅ |
 
 - **画像 / ファイル / 音声**列は対応するメッセージタイプの送受信に対応していることを示します。詳細は各チャネルのドキュメントを参照してください
 - **グループチャット**列はグループメッセージを認識して応答できることを示します
@@ -37,3 +38,4 @@ CowAgent は複数のチャットチャネルへの接続に対応しており
 - [QQ](/ja/channels/qq) — QQ 公式ボットオープンプラットフォーム
 - [WeCom アプリ](/ja/channels/wecom) — WeCom 自作アプリ接続
 - [WeChat 公式アカウント](/ja/channels/wechatmp) — WeChat 公式アカウント（購読アカウント / サービスアカウント）
+- [Telegram](/ja/channels/telegram) — グローバル IM、5 分で接続、公開 IP 不要
diff --git a/docs/ja/channels/telegram.mdx b/docs/ja/channels/telegram.mdx
new file mode 100644
index 00000000..eab1d3b0
--- /dev/null
+++ b/docs/ja/channels/telegram.mdx
@@ -0,0 +1,111 @@
+---
+title: Telegram
+description: Telegram Bot API 経由で CowAgent を接続
+---
+
+> 公式の Telegram Bot API を通じて CowAgent を接続します。1 対 1 チャットおよびグループチャット（@メンションまたはボットへの返信で起動）に対応。Long Polling 方式のため公開 IP は不要で、すぐに利用できます。
+
+
+## 1. 接続手順
+
+### ステップ 1: BotFather で Bot を作成
+
+1. Telegram で公式アカウント [@BotFather](https://t.me/BotFather) を開きます。
+2. `/newbot` を送り、案内に従って入力します:
+   - **Bot 名**（表示名、例: `My CowAgent Bot`）
+   - **Bot ユーザー名**（`bot` で終わる必要があります、例: `my_cowagent_bot`）
+3. 作成完了後、BotFather から **HTTP API Token**（例: `123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ`）が返されます。大切に保管してください。
+
+<Tip>
+  Token は Bot のパスワードに相当します。漏えいしないよう注意してください。万が一漏れた場合は `@BotFather` に `/revoke` を送って再発行できます。
+</Tip>
+
+### ステップ 2:（グループ利用時）Privacy Mode を無効化
+
+1 対 1 チャットのみ利用する場合はスキップ可能です。Telegram Bot は既定で **Privacy Mode** が有効で、グループ内では `@bot` 接尾辞付きのコマンド（例: `/start@your_bot`）と、Bot メッセージへの返信のみ受信できます。**通常の `@bot こんにちは` のようなテキストメッセージは届きません**。そのままだとグループで反応しないので、必要に応じて以下を設定してください。
+
+`@BotFather` に対して:
+
+1. `/setprivacy` を送信
+2. 作成した Bot を選択
+3. `Disable` を選択
+
+<Note>
+  設定後もグループで反応しない場合は、Bot を一度グループから外して再度追加してみてください。
+</Note>
+
+### ステップ 3: CowAgent に接続
+
+<Tabs>
+  <Tab title="Web コンソール（推奨）">
+    Web コンソール（既定 `http://127.0.0.1:9899`）を開き、**チャネル** メニュー → **チャネルを追加** → **Telegram** を選択し、Bot Token を貼り付けて接続をクリックします。
+  </Tab>
+  <Tab title="設定ファイル">
+    `config.json` に以下を追加して Cow を起動します:
+
+    ```json
+    {
+      "channel_type": "telegram",
+      "telegram_token": "123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ",
+      "telegram_group_trigger": "mention_or_reply"
+    }
+    ```
+
+    | パラメータ | 説明 | 既定値 |
+    | --- | --- | --- |
+    | `telegram_token` | BotFather から発行された HTTP API Token | - |
+    | `telegram_group_trigger` | グループのトリガー方式: `mention_or_reply`（@ または返信）/ `mention_only`（@ のみ）/ `all`（全メッセージ） | `mention_or_reply` |
+    | `telegram_register_commands` | 起動時に BotFather にコマンドメニューを登録するかどうか | `true` |
+  </Tab>
+</Tabs>
+
+ログに以下のような出力が表示されれば接続成功です:
+
+```
+[Telegram] Bot logged in as @my_cowagent_bot (id=123456789)
+[Telegram] Registered 10 bot commands
+[Telegram] ✅ Telegram bot ready, polling for updates
+```
+
+## 2. 機能
+
+| 機能 | 対応状況 |
+| --- | --- |
+| 1 対 1 チャット | ✅ |
+| グループチャット（@bot / Bot への返信） | ✅ |
+| テキストメッセージ | ✅ 送受信 |
+| 画像メッセージ | ✅ 送受信 |
+| 音声メッセージ | ✅ 送受信（OGG/Opus） |
+| 動画メッセージ | ✅ 送受信 |
+| ファイルメッセージ | ✅ 送受信（PDF / Word / Excel など） |
+| コマンドメニュー | ✅ Web コンソールの slash コマンドと一致 |
+
+### コマンドメニュー
+
+起動時に BotFather へコマンドメニューを自動登録します。Telegram の入力欄で `/` を入力するとサジェストが表示されます:
+
+| コマンド | 説明 |
+| --- | --- |
+| `/help` | コマンドヘルプを表示 |
+| `/status` | 実行ステータスを確認 |
+| `/context` | 対話コンテキストを表示（`/context clear` でクリア） |
+| `/skill` | スキル管理（`/skill list`、`/skill install` など） |
+| `/memory` | 記憶管理（`/memory dream`） |
+| `/knowledge` | ナレッジベース管理（`/knowledge list` / `on` / `off`） |
+| `/config` | 現在の設定を表示 |
+| `/cancel` | 実行中の Agent タスクを中断 |
+| `/logs` | 最近のログを表示 |
+| `/version` | バージョンを表示 |
+
+<Note>
+  Telegram のコマンドメニューはトップレベルのコマンドのみ表示されます。サブコマンドはスペース区切りで入力します（例: `/skill list`、`/context clear`）。
+</Note>
+
+## 3. 使い方
+
+接続が完了したら:
+
+- **1 対 1 チャット**: Telegram で Bot のユーザー名（例: `@my_cowagent_bot`）を検索し、`Start` をタップして会話を開始します。
+- **グループチャット**: Bot をグループに追加し、`@bot こんにちは` または **Bot のメッセージに返信** することで起動します。グループで反応しない場合は [ステップ 2](#ステップ-2-グループ利用時-privacy-mode-を無効化) の Privacy Mode 設定を確認してください。
+
+画像やファイルを送るときは、添付欄の上の入力欄に **キャプション**（説明・質問）を直接書いて一緒に送信できます。Bot は添付ファイルとキャプションを合わせて回答します。先に添付を送り、その後に質問を送る形でも、2 つのメッセージは自動でまとめて処理されます。
diff --git a/docs/zh/README.md b/docs/zh/README.md
index 095e9194..79bcb769 100644
--- a/docs/zh/README.md
+++ b/docs/zh/README.md
@@ -9,7 +9,7 @@
 
 **CowAgent** 是一个开源的超级 AI 助理，能够主动思考和规划任务、操作计算机和外部资源、创造和执行 Skills、构建知识库与长期记忆，与你一同成长，是 Agent Harness 工程的最佳实践之一。
 
-CowAgent 轻量、易部署、可扩展，自由接入主流大模型，覆盖微信、飞书、钉钉、企微、QQ、网页等多渠道，7×24 运行于个人电脑或服务器中。
+CowAgent 轻量、易部署、可扩展，自由接入主流大模型，覆盖微信、飞书、钉钉、企微、QQ、Telegram、网页等多渠道，7×24 运行于个人电脑或服务器中。
 
 <p align="center">
   <a href="https://cowagent.ai/?lang=zh">🌐 官网</a> &nbsp;·&nbsp;
@@ -30,7 +30,7 @@ CowAgent 轻量、易部署、可扩展，自由接入主流大模型，覆盖
 | [知识库](https://docs.cowagent.ai/knowledge) | 自动整理结构化知识为 Markdown Wiki，构建持续增长的知识图谱，可视化浏览 |
 | [技能](https://docs.cowagent.ai/skills) | 从 [Skill Hub](https://skills.cowagent.ai/)、GitHub、ClawHub 等一键安装；也可通过对话创造自定义技能 |
 | [工具](https://docs.cowagent.ai/tools) | 内置文件读写、终端、浏览器、定时任务、记忆检索、联网搜索等 10+ 工具，支持 MCP 协议 |
-| [通道](https://docs.cowagent.ai/channels) | 一个 Agent 同时接入 Web、微信、飞书、钉钉、企微、QQ、公众号 等多个渠道 |
+| [通道](https://docs.cowagent.ai/channels) | 一个 Agent 同时接入 Web、微信、飞书、钉钉、企微、QQ、公众号、Telegram 等多个渠道 |
 | 多模态 | 文本、图片、语音、文件全消息类型支持，覆盖识别、生成、收发 |
 | [模型](https://docs.cowagent.ai/models) | DeepSeek、Claude、Gemini、GPT、GLM、Qwen、Kimi、MiniMax、Doubao 等主流厂商，配置一行切换 |
 | [部署](https://docs.cowagent.ai/guide/quick-start) | 一键脚本安装，Web 控制台统一管理；本地、Docker、服务器多种部署方式 |
@@ -126,6 +126,7 @@ CowAgent 支持国内外主流厂商的大语言模型。**文本对话、图像
 | [QQ](https://docs.cowagent.ai/channels/qq) | ✅ | ✅ | ✅ | | ✅ |
 | [企业微信应用](https://docs.cowagent.ai/channels/wecom) | ✅ | ✅ | ✅ | ✅ | |
 | [微信公众号](https://docs.cowagent.ai/channels/wechatmp) | ✅ | ✅ | | ✅ | |
+| [Telegram](https://docs.cowagent.ai/channels/telegram) | ✅ | ✅ | ✅ | ✅ | ✅ |
 
 > 飞书、企微智能机器人支持在 Web 控制台内**扫码一键接入**，无需公网 IP。详见 [通道概览](https://docs.cowagent.ai/channels)。
 
diff --git a/requirements.txt b/requirements.txt
index 706d9894..b6592d70 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,3 +27,5 @@ dingtalk_stream
 # wecom bot websocket mode
 websocket-client>=1.4.0
 pycryptodome
+# telegram bot (requires Python >= 3.9; skipped on older versions)
+python-telegram-bot; python_version >= "3.9"