diff --git a/README.md b/README.md
index 2e98edb1..2c8c7373 100644
--- a/README.md
+++ b/README.md
@@ -109,7 +109,7 @@ CowAgent supports all mainstream LLM providers. **Chat, vision, image generation
 | [DeepSeek](https://docs.cowagent.ai/models/deepseek) | deepseek-v4-flash / pro | ✅ | | | | | |
 | [Qwen](https://docs.cowagent.ai/models/qwen) | qwen3.7-plus | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
 | [GLM](https://docs.cowagent.ai/models/glm) | glm-5.2, glm-5v-turbo | ✅ | ✅ | | ✅ | | ✅ |
-| [Doubao](https://docs.cowagent.ai/models/doubao) | doubao-seed-2.0 series | ✅ | ✅ | ✅ | | | ✅ |
+| [Doubao](https://docs.cowagent.ai/models/doubao) | doubao-seed-2.1 series | ✅ | ✅ | ✅ | | | ✅ |
 | [Kimi](https://docs.cowagent.ai/models/kimi) | kimi-k2.7-code | ✅ | ✅ | | | | |
 | [MiniMax](https://docs.cowagent.ai/models/minimax) | MiniMax-M3 | ✅ | ✅ | ✅ | | ✅ | |
 | [ERNIE](https://docs.cowagent.ai/models/qianfan) | ernie-5.1 | ✅ | ✅ | | | | |
diff --git a/channel/web/web_channel.py b/channel/web/web_channel.py
index cb45e369..a1434782 100644
--- a/channel/web/web_channel.py
+++ b/channel/web/web_channel.py
@@ -1512,7 +1512,7 @@ class ConfigHandler:
         const.GPT_55, const.GPT_54, const.GPT_54_MINI, const.GPT_54_NANO, const.GPT_5, const.GPT_41, const.GPT_4o,
         const.GLM_5_2, const.GLM_5_1, const.GLM_5_TURBO, const.GLM_5, const.GLM_4_7,
         const.QWEN37_PLUS, const.QWEN37_MAX, const.QWEN36_PLUS,
-        const.DOUBAO_SEED_2_PRO, const.DOUBAO_SEED_2_CODE,
+        const.DOUBAO_SEED_2_1_PRO, const.DOUBAO_SEED_2_1_TURBO, const.DOUBAO_SEED_2_CODE,
         const.KIMI_K2_7_CODE, const.KIMI_K2_7_CODE_HIGHSPEED, const.KIMI_K2_6, const.KIMI_K2_5, const.KIMI_K2,
         const.ERNIE_5_1, const.ERNIE_5, const.ERNIE_X1_1, const.ERNIE_45_TURBO_128K, const.ERNIE_45_TURBO_32K,
         const.MIMO_V2_5_PRO, const.MIMO_V2_5,
@@ -1592,7 +1592,7 @@ class ConfigHandler:
             "api_base_key": "ark_base_url",
             "api_base_default": "https://ark.cn-beijing.volces.com/api/v3",
             "api_base_placeholder": _PLACEHOLDER_DOUBAO,
-            "models": [const.DOUBAO_SEED_2_PRO, const.DOUBAO_SEED_2_CODE],
+            "models": [const.DOUBAO_SEED_2_1_PRO, const.DOUBAO_SEED_2_1_TURBO, const.DOUBAO_SEED_2_PRO, const.DOUBAO_SEED_2_CODE],
         }),
         ("moonshot", {
             "label": "Kimi",
@@ -2126,7 +2126,7 @@ class ModelsHandler:
             const.GPT_41_MINI,
             const.GPT_4o,
         ],
-        "doubao":    [const.DOUBAO_SEED_2_PRO],
+        "doubao":    [const.DOUBAO_SEED_2_1_PRO, const.DOUBAO_SEED_2_1_TURBO, const.DOUBAO_SEED_2_PRO],
         "moonshot":  [const.KIMI_K2_6],
         "dashscope": [const.QWEN37_PLUS, const.QWEN36_PLUS],
         "claudeAPI": [const.CLAUDE_4_8_OPUS, const.CLAUDE_4_7_OPUS, const.CLAUDE_4_6_SONNET, const.CLAUDE_4_6_OPUS],
@@ -2150,7 +2150,7 @@ class ModelsHandler:
             const.GPT_41_MINI,
             const.GPT_54_MINI,
             const.QWEN37_PLUS,
-            const.DOUBAO_SEED_2_PRO,
+            const.DOUBAO_SEED_2_1_PRO,
             const.KIMI_K2_6,
             const.CLAUDE_4_6_SONNET,
             const.GEMINI_31_FLASH_LITE_PRE,
diff --git a/common/const.py b/common/const.py
index 6f2478b0..e8511af8 100644
--- a/common/const.py
+++ b/common/const.py
@@ -153,6 +153,8 @@ MIMO_V2_FLASH = "mimo-v2-flash"      # MiMo V2 Flash - high-speed
 
 # Doubao (Volcengine Ark)
 DOUBAO = "doubao"
+DOUBAO_SEED_2_1_PRO = "doubao-seed-2-1-pro-260628"
+DOUBAO_SEED_2_1_TURBO = "doubao-seed-2-1-turbo-260628"
 DOUBAO_SEED_2_CODE = "doubao-seed-2-0-code-preview-260215"
 DOUBAO_SEED_2_PRO = "doubao-seed-2-0-pro-260215"
 DOUBAO_SEED_2_LITE = "doubao-seed-2-0-lite-260215"
@@ -223,7 +225,8 @@ MODEL_LIST = [
               QWEN37_PLUS, QWEN37_MAX, QWEN36_PLUS, QWEN35_PLUS, QWEN3_MAX, QWEN_MAX, QWEN_PLUS, QWEN_TURBO, QWEN_LONG,
 
               # Doubao
-              DOUBAO, DOUBAO_SEED_2_CODE, DOUBAO_SEED_2_PRO, DOUBAO_SEED_2_LITE, DOUBAO_SEED_2_MINI,
+              DOUBAO, DOUBAO_SEED_2_1_PRO, DOUBAO_SEED_2_1_TURBO,
+              DOUBAO_SEED_2_CODE, DOUBAO_SEED_2_PRO, DOUBAO_SEED_2_LITE, DOUBAO_SEED_2_MINI,
 
               # Kimi (Moonshot)
               MOONSHOT, "moonshot-v1-8k", "moonshot-v1-32k", "moonshot-v1-128k",
diff --git a/docs/ja/README.md b/docs/ja/README.md
index 7f0ec06e..9cf2471f 100644
--- a/docs/ja/README.md
+++ b/docs/ja/README.md
@@ -109,7 +109,7 @@ CowAgent は主要な LLM プロバイダーすべてに対応しています。
 | [DeepSeek](https://docs.cowagent.ai/ja/models/deepseek) | deepseek-v4-flash / pro | ✅ | | | | | |
 | [Qwen](https://docs.cowagent.ai/ja/models/qwen) | qwen3.7-plus | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
 | [GLM](https://docs.cowagent.ai/ja/models/glm) | glm-5.2、glm-5v-turbo | ✅ | ✅ | | ✅ | | ✅ |
-| [Doubao](https://docs.cowagent.ai/ja/models/doubao) | doubao-seed-2.0 シリーズ | ✅ | ✅ | ✅ | | | ✅ |
+| [Doubao](https://docs.cowagent.ai/ja/models/doubao) | doubao-seed-2.1 シリーズ | ✅ | ✅ | ✅ | | | ✅ |
 | [Kimi](https://docs.cowagent.ai/ja/models/kimi) | kimi-k2.7-code | ✅ | ✅ | | | | |
 | [MiniMax](https://docs.cowagent.ai/ja/models/minimax) | MiniMax-M3 | ✅ | ✅ | ✅ | | ✅ | |
 | [ERNIE](https://docs.cowagent.ai/ja/models/qianfan) | ernie-5.1 | ✅ | ✅ | | | | |
diff --git a/docs/ja/models/doubao.mdx b/docs/ja/models/doubao.mdx
index 8ed039f7..bb04abc7 100644
--- a/docs/ja/models/doubao.mdx
+++ b/docs/ja/models/doubao.mdx
@@ -13,20 +13,20 @@ Doubao（火山方舟）はテキスト対話、画像理解、画像生成（Se
 
 ```json
 {
-  "model": "doubao-seed-2-0-pro-260215",
+  "model": "doubao-seed-2-1-pro-260628",
   "ark_api_key": "YOUR_API_KEY"
 }
 ```
 
 | パラメータ | 説明 |
 | --- | --- |
-| `model` | `doubao-seed-2-0-pro-260215`、`doubao-seed-2-0-code-preview-260215`、`doubao-seed-2-0-lite-260215` などを指定可能 |
+| `model` | `doubao-seed-2-1-pro-260628`、`doubao-seed-2-1-turbo-260628`、`doubao-seed-2-0-pro-260215`、`doubao-seed-2-0-code-preview-260215` などを指定可能 |
 | `ark_api_key` | [火山方舟コンソール](https://console.volcengine.com/ark/region:ark+cn-beijing/apikey) で作成 |
 | `ark_base_url` | 任意。デフォルトは `https://ark.cn-beijing.volces.com/api/v3` |
 
 ## 画像理解
 
-`ark_api_key` を設定すると、Agent の Vision ツールは自動的に `doubao-seed-2-0-pro-260215` を使用して画像を認識します。追加設定は不要です。
+`ark_api_key` を設定し、メインモデルが Doubao 系の場合、Agent の Vision ツールは現在のメインモデルを自動的に使用して画像を認識します。追加設定は不要です。
 
 Vision モデルを手動で指定したい場合は：
 
@@ -34,7 +34,7 @@ Vision モデルを手動で指定したい場合は：
 {
   "tools": {
     "vision": {
-      "model": "doubao-seed-2-0-pro-260215"
+      "model": "doubao-seed-2-1-pro-260628"
     }
   }
 }
diff --git a/docs/ja/models/index.mdx b/docs/ja/models/index.mdx
index 0ded47d7..645e3db2 100644
--- a/docs/ja/models/index.mdx
+++ b/docs/ja/models/index.mdx
@@ -25,7 +25,7 @@ CowAgent は国内外の主要ベンダーの大規模言語モデルをサポ
 | [OpenAI](/models/openai) | gpt-5.5、o シリーズ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
 | [Zhipu GLM](/models/glm) | glm-5.2、glm-5v-turbo | ✅ | ✅ | | ✅ | | ✅ |
 | [Tongyi Qianwen](/models/qwen) | qwen3.7-plus | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
-| [Doubao](/models/doubao) | doubao-seed-2.0 シリーズ | ✅ | ✅ | ✅ | | | ✅ |
+| [Doubao](/models/doubao) | doubao-seed-2.1 シリーズ | ✅ | ✅ | ✅ | | | ✅ |
 | [Kimi](/models/kimi) | kimi-k2.7-code | ✅ | ✅ | | | | |
 | [Baidu Qianfan](/models/qianfan) | ernie-5.1 | ✅ | ✅ | | | | |
 | [LinkAI](/models/linkai) | 複数ベンダー 100+ モデルを統一接続 | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
diff --git a/docs/ja/models/linkai.mdx b/docs/ja/models/linkai.mdx
index a1152a2c..2593f820 100644
--- a/docs/ja/models/linkai.mdx
+++ b/docs/ja/models/linkai.mdx
@@ -40,7 +40,7 @@ description: LinkAI プラットフォーム経由でテキスト、ビジョン
 }
 ```
 
-選択可能なモデル：`gpt-4.1-mini`、`gpt-5.4-mini`、`qwen3.7-plus`、`doubao-seed-2-0-pro-260215`、`kimi-k2.6`、`claude-sonnet-4-6`、`gemini-3.1-flash-lite-preview` など。
+選択可能なモデル：`gpt-4.1-mini`、`gpt-5.4-mini`、`qwen3.7-plus`、`doubao-seed-2-1-pro-260628`、`kimi-k2.6`、`claude-sonnet-4-6`、`gemini-3.1-flash-lite-preview` など。
 
 ## 画像生成
 
diff --git a/docs/ja/tools/vision.mdx b/docs/ja/tools/vision.mdx
index 4621347d..cf0850c9 100644
--- a/docs/ja/tools/vision.mdx
+++ b/docs/ja/tools/vision.mdx
@@ -22,7 +22,7 @@ Vision ツールは多段階の自動選択 + 自動フォールバック戦略
 | 通義千問 (DashScope) | メインモデルを使用 | 例：qwen3.7-plus など |
 | Claude | メインモデルを使用 | Anthropic ネイティブ画像形式 |
 | Gemini | メインモデルを使用 | inlineData 形式 |
-| 豆包 (Doubao) | メインモデルを使用 | doubao-seed-2-0 シリーズがネイティブ対応 |
+| 豆包 (Doubao) | メインモデルを使用 | doubao-seed-2-1 シリーズがネイティブ対応 |
 | Kimi (Moonshot) | メインモデルを使用 | kimi-k2.6、kimi-k2.5 がネイティブ対応 |
 | 百度 Qianfan | メインモデルを使用 | デフォルトでマルチモーダルメインモデル（`ernie-5.1` など）を使用。メインモデルが非対応の場合は `ernie-4.5-turbo-vl` にフォールバック |
 | 智谱 AI | glm-5v-turbo | 常にビジョン専用モデルを使用 |
diff --git a/docs/models/doubao.mdx b/docs/models/doubao.mdx
index 818275e5..3628eb94 100644
--- a/docs/models/doubao.mdx
+++ b/docs/models/doubao.mdx
@@ -13,20 +13,20 @@ Doubao (Volcengine Ark) supports text chat, image understanding, image generatio
 
 ```json
 {
-  "model": "doubao-seed-2-0-pro-260215",
+  "model": "doubao-seed-2-1-pro-260628",
   "ark_api_key": "YOUR_API_KEY"
 }
 ```
 
 | Parameter | Description |
 | --- | --- |
-| `model` | Can be `doubao-seed-2-0-pro-260215`, `doubao-seed-2-0-code-preview-260215`, `doubao-seed-2-0-lite-260215`, etc. |
+| `model` | Can be `doubao-seed-2-1-pro-260628`, `doubao-seed-2-1-turbo-260628`, `doubao-seed-2-0-pro-260215`, `doubao-seed-2-0-code-preview-260215`, etc. |
 | `ark_api_key` | Create one in the [Volcengine Ark Console](https://console.volcengine.com/ark/region:ark+cn-beijing/apikey) |
 | `ark_base_url` | Optional, defaults to `https://ark.cn-beijing.volces.com/api/v3` |
 
 ## Image Understanding
 
-Once `ark_api_key` is configured, the Agent's Vision tool automatically uses `doubao-seed-2-0-pro-260215` to recognize images, with no extra setup required.
+Once `ark_api_key` is configured and the main model is a Doubao model, the Agent's Vision tool automatically uses the current main model to recognize images, with no extra setup required.
 
 To manually specify a Vision model:
 
@@ -34,7 +34,7 @@ To manually specify a Vision model:
 {
   "tools": {
     "vision": {
-      "model": "doubao-seed-2-0-pro-260215"
+      "model": "doubao-seed-2-1-pro-260628"
     }
   }
 }
diff --git a/docs/models/index.mdx b/docs/models/index.mdx
index 54543249..b3aaaee4 100644
--- a/docs/models/index.mdx
+++ b/docs/models/index.mdx
@@ -18,7 +18,7 @@ A snapshot of each provider's capabilities. "Text" refers to the main chat model
 | [OpenAI](/models/openai) | gpt-5.5, o-series | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
 | [GLM](/models/glm) | glm-5.2, glm-5v-turbo | ✅ | ✅ | | ✅ | | ✅ |
 | [Qwen](/models/qwen) | qwen3.7-plus | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
-| [Doubao](/models/doubao) | doubao-seed-2.0 series | ✅ | ✅ | ✅ | | | ✅ |
+| [Doubao](/models/doubao) | doubao-seed-2.1 series | ✅ | ✅ | ✅ | | | ✅ |
 | [Kimi](/models/kimi) | kimi-k2.7-code | ✅ | ✅ | | | | |
 | [ERNIE](/models/qianfan) | ernie-5.1 | ✅ | ✅ | | | | |
 | [MiMo](/models/mimo) | mimo-v2.5-pro / v2.5 | ✅ | ✅ | | | ✅ | |
diff --git a/docs/models/linkai.mdx b/docs/models/linkai.mdx
index 3610a1a1..a1a96fde 100644
--- a/docs/models/linkai.mdx
+++ b/docs/models/linkai.mdx
@@ -40,7 +40,7 @@ Once configured, the Agent's Vision tool automatically calls multimodal models v
 }
 ```
 
-Available models: `gpt-4.1-mini`, `gpt-5.4-mini`, `qwen3.7-plus`, `doubao-seed-2-0-pro-260215`, `kimi-k2.6`, `claude-sonnet-4-6`, `gemini-3.1-flash-lite-preview`, etc.
+Available models: `gpt-4.1-mini`, `gpt-5.4-mini`, `qwen3.7-plus`, `doubao-seed-2-1-pro-260628`, `kimi-k2.6`, `claude-sonnet-4-6`, `gemini-3.1-flash-lite-preview`, etc.
 
 ## Image Generation
 
diff --git a/docs/tools/vision.mdx b/docs/tools/vision.mdx
index 4b15b984..402cd022 100644
--- a/docs/tools/vision.mdx
+++ b/docs/tools/vision.mdx
@@ -22,7 +22,7 @@ If the current provider fails, the tool automatically tries the next one until i
 | Qwen (DashScope) | Main model | e.g. qwen3.7-plus, etc. |
 | Claude | Main model | Anthropic native image format |
 | Gemini | Main model | inlineData format |
-| Doubao | Main model | doubao-seed-2-0 series natively supported |
+| Doubao | Main model | doubao-seed-2-1 series natively supported |
 | Kimi (Moonshot) | Main model | kimi-k2.6, kimi-k2.5 natively supported |
 | ERNIE | Main model | Defaults to the multimodal main model (e.g. `ernie-5.1`); falls back to `ernie-4.5-turbo-vl` when the main model is not multimodal |
 | ZhipuAI | glm-5v-turbo | Always uses the dedicated vision model |
diff --git a/docs/zh/README.md b/docs/zh/README.md
index 94dea68f..3cc0524a 100644
--- a/docs/zh/README.md
+++ b/docs/zh/README.md
@@ -110,7 +110,7 @@ CowAgent 支持国内外主流厂商的大语言模型。**文本对话、图像
 | [OpenAI](https://docs.cowagent.ai/zh/models/openai) | gpt-5.5、o 系列 | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
 | [智谱 GLM](https://docs.cowagent.ai/zh/models/glm) | glm-5.2、glm-5v-turbo | ✅ | ✅ | | ✅ | | ✅ |
 | [通义千问](https://docs.cowagent.ai/zh/models/qwen) | qwen3.7-plus | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
-| [豆包 Doubao](https://docs.cowagent.ai/zh/models/doubao) | doubao-seed-2.0 系列 | ✅ | ✅ | ✅ | | | ✅ |
+| [豆包 Doubao](https://docs.cowagent.ai/zh/models/doubao) | doubao-seed-2.1 系列 | ✅ | ✅ | ✅ | | | ✅ |
 | [Kimi](https://docs.cowagent.ai/zh/models/kimi) | kimi-k2.7-code | ✅ | ✅ | | | | |
 | [百度ERNIE](https://docs.cowagent.ai/zh/models/qianfan) | ernie-5.1 | ✅ | ✅ | | | | |
 | [小米 MiMo](https://docs.cowagent.ai/zh/models/mimo) | mimo-v2.5-pro / v2.5 | ✅ | ✅ | | | ✅ | |
diff --git a/docs/zh/models/doubao.mdx b/docs/zh/models/doubao.mdx
index cfdc5670..4296c535 100644
--- a/docs/zh/models/doubao.mdx
+++ b/docs/zh/models/doubao.mdx
@@ -13,20 +13,20 @@ description: 豆包（火山方舟）模型配置（文本 / 图像理解 / 图
 
 ```json
 {
-  "model": "doubao-seed-2-0-pro-260215",
+  "model": "doubao-seed-2-1-pro-260628",
   "ark_api_key": "YOUR_API_KEY"
 }
 ```
 
 | 参数 | 说明 |
 | --- | --- |
-| `model` | 可填 `doubao-seed-2-0-pro-260215`、`doubao-seed-2-0-code-preview-260215`、`doubao-seed-2-0-lite-260215` 等 |
+| `model` | 可填 `doubao-seed-2-1-pro-260628`、`doubao-seed-2-1-turbo-260628`、`doubao-seed-2-0-pro-260215`、`doubao-seed-2-0-code-preview-260215` 等 |
 | `ark_api_key` | 在 [火山方舟控制台](https://console.volcengine.com/ark/region:ark+cn-beijing/apikey) 创建 |
 | `ark_base_url` | 可选，默认为 `https://ark.cn-beijing.volces.com/api/v3` |
 
 ## 图像理解
 
-配置 `ark_api_key` 后 Agent 的 Vision 工具会自动使用 `doubao-seed-2-0-pro-260215` 识别图像，无需额外配置。
+配置 `ark_api_key` 后，若主模型为豆包系列，Agent 的 Vision 工具会自动使用当前主模型识别图像，无需额外配置。
 
 如需手动指定 Vision 模型：
 
@@ -34,7 +34,7 @@ description: 豆包（火山方舟）模型配置（文本 / 图像理解 / 图
 {
   "tools": {
     "vision": {
-      "model": "doubao-seed-2-0-pro-260215"
+      "model": "doubao-seed-2-1-pro-260628"
     }
   }
 }
diff --git a/docs/zh/models/index.mdx b/docs/zh/models/index.mdx
index 13ea923b..de4c8a25 100644
--- a/docs/zh/models/index.mdx
+++ b/docs/zh/models/index.mdx
@@ -19,7 +19,7 @@ CowAgent 支持国内外主流厂商的大语言模型，模型接口实现在
 | [OpenAI](/zh/models/openai) | gpt-5.5、o 系列 | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
 | [智谱 GLM](/zh/models/glm) | glm-5.2、glm-5v-turbo | ✅ | ✅ | | ✅ | | ✅ |
 | [通义千问](/zh/models/qwen) | qwen3.7-plus | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
-| [豆包 Doubao](/zh/models/doubao) | doubao-seed-2.0 系列 | ✅ | ✅ | ✅ | | | ✅ |
+| [豆包 Doubao](/zh/models/doubao) | doubao-seed-2.1 系列 | ✅ | ✅ | ✅ | | | ✅ |
 | [Kimi](/zh/models/kimi) | kimi-k2.7-code | ✅ | ✅ | | | | |
 | [百度千帆](/zh/models/qianfan) | ernie-5.1 | ✅ | ✅ | | | | |
 | [小米 MiMo](/zh/models/mimo) | mimo-v2.5-pro / v2.5 | ✅ | ✅ | | | ✅ | |
diff --git a/docs/zh/models/linkai.mdx b/docs/zh/models/linkai.mdx
index c0762858..e68c68b3 100644
--- a/docs/zh/models/linkai.mdx
+++ b/docs/zh/models/linkai.mdx
@@ -40,7 +40,7 @@ description: 通过 LinkAI 平台统一接入文本、视觉、图像、语音
 }
 ```
 
-可选模型：`gpt-4.1-mini`、`gpt-5.4-mini`、`qwen3.7-plus`、`doubao-seed-2-0-pro-260215`、`kimi-k2.6`、`claude-sonnet-4-6`、`gemini-3.1-flash-lite-preview` 等。
+可选模型：`gpt-4.1-mini`、`gpt-5.4-mini`、`qwen3.7-plus`、`doubao-seed-2-1-pro-260628`、`kimi-k2.6`、`claude-sonnet-4-6`、`gemini-3.1-flash-lite-preview` 等。
 
 ## 图像生成
 
diff --git a/docs/zh/tools/vision.mdx b/docs/zh/tools/vision.mdx
index b10441a7..bfc05915 100644
--- a/docs/zh/tools/vision.mdx
+++ b/docs/zh/tools/vision.mdx
@@ -22,7 +22,7 @@ Vision 工具采用多级自动选择 + 自动兜底策略，无需手动配置
 | 通义千问 (DashScope) | 使用主模型 | 例如 qwen3.7-plus 等 |
 | Claude | 使用主模型 | Anthropic 原生图像格式 |
 | Gemini | 使用主模型 | inlineData 格式 |
-| 豆包 (Doubao) | 使用主模型 | doubao-seed-2-0 系列原生支持 |
+| 豆包 (Doubao) | 使用主模型 | doubao-seed-2-1 系列原生支持 |
 | Kimi (Moonshot) | 使用主模型 | kimi-k2.6、kimi-k2.5 原生支持 |
 | 百度千帆 (Qianfan) | 使用主模型 | 默认使用多模态主模型 (如 ernie-5.1)，主模型不支持时兜底使用 ernie-4.5-turbo-vl |
 | 智谱 AI | glm-5v-turbo | 固定使用视觉专用模型 |
diff --git a/models/doubao/doubao_bot.py b/models/doubao/doubao_bot.py
index 3c8e35e6..9e0de587 100644
--- a/models/doubao/doubao_bot.py
+++ b/models/doubao/doubao_bot.py
@@ -9,6 +9,7 @@ from models.bot import Bot
 from models.session_manager import SessionManager
 from bridge.context import ContextType
 from bridge.reply import Reply, ReplyType
+from common import const
 from common.log import logger
 from config import conf, load_config
 from .doubao_session import DoubaoSession
@@ -18,8 +19,8 @@ from .doubao_session import DoubaoSession
 class DoubaoBot(Bot):
     def __init__(self):
         super().__init__()
-        self.sessions = SessionManager(DoubaoSession, model=conf().get("model") or "doubao-seed-2-0-pro-260215")
-        model = conf().get("model") or "doubao-seed-2-0-pro-260215"
+        self.sessions = SessionManager(DoubaoSession, model=conf().get("model") or const.DOUBAO_SEED_2_1_PRO)
+        model = conf().get("model") or const.DOUBAO_SEED_2_1_PRO
         self.args = {
             "model": model,
             "temperature": conf().get("temperature", 0.8),
@@ -153,7 +154,7 @@ class DoubaoBot(Bot):
                     max_tokens: int = 1000) -> dict:
         """Analyze an image using Doubao (Volcengine Ark) OpenAI-compatible API."""
         try:
-            vision_model = model or self.args.get("model", "doubao-seed-2-0-pro-260215")
+            vision_model = model or self.args.get("model", const.DOUBAO_SEED_2_1_PRO)
             payload = {
                 "model": vision_model,
                 "max_tokens": max_tokens,
diff --git a/models/doubao/doubao_session.py b/models/doubao/doubao_session.py
index 561347ec..1e432a1b 100644
--- a/models/doubao/doubao_session.py
+++ b/models/doubao/doubao_session.py
@@ -1,9 +1,10 @@
 from models.session_manager import Session
+from common import const
 from common.log import logger
 
 
 class DoubaoSession(Session):
-    def __init__(self, session_id, system_prompt=None, model="doubao-seed-2-0-pro-260215"):
+    def __init__(self, session_id, system_prompt=None, model=const.DOUBAO_SEED_2_1_PRO):
         super().__init__(session_id, system_prompt)
         self.model = model
         self.reset()
diff --git a/run.sh b/run.sh
index c7054298..08167015 100755
--- a/run.sh
+++ b/run.sh
@@ -603,7 +603,7 @@ select_model() {
         "MiniMax (MiniMax-M3, etc.)" \
         "GLM (glm-5.2, etc.)" \
         "Qwen (qwen3.7-plus, qwen3.7-max, etc.)" \
-        "Doubao (doubao-seed-2.0, etc.)" \
+        "Doubao (doubao-seed-2.1, etc.)" \
         "Kimi (kimi-k2.7-code, etc.)" \
         "MiMo (mimo-v2.5-pro, etc.)" \
         "LinkAI ($(t "一个 Key 接入所有模型" "access all models via one API"))" \
@@ -635,7 +635,7 @@ configure_model() {
         5) read_model_config "MiniMax" "MiniMax-M3" "MINIMAX_KEY" ;;
         6) read_model_config "GLM" "glm-5.2" "ZHIPU_KEY" ;;
         7) read_model_config "Qwen (DashScope)" "qwen3.7-plus" "DASHSCOPE_KEY" ;;
-        8) read_model_config "Doubao (Volcengine Ark)" "doubao-seed-2-0-code-preview-260215" "ARK_KEY" ;;
+        8) read_model_config "Doubao (Volcengine Ark)" "doubao-seed-2-1-pro-260628" "ARK_KEY" ;;
         9) read_model_config "Kimi (Moonshot)" "kimi-k2.7-code" "MOONSHOT_KEY" ;;
         10) read_model_config "MiMo" "mimo-v2.5-pro" "MIMO_KEY" ;;
         11)
diff --git a/scripts/run.ps1 b/scripts/run.ps1
index 8d63f8eb..2124710a 100644
--- a/scripts/run.ps1
+++ b/scripts/run.ps1
@@ -460,7 +460,7 @@ $ModelChoices = @{
     5  = @{ Provider = "MiniMax";                 Default = "MiniMax-M3";                          Field = "minimax_api_key" }
     6  = @{ Provider = "GLM";                     Default = "glm-5.2";                             Field = "zhipu_ai_api_key" }
     7  = @{ Provider = "Qwen (DashScope)";        Default = "qwen3.7-plus";                        Field = "dashscope_api_key" }
-    8  = @{ Provider = "Doubao (Volcengine Ark)"; Default = "doubao-seed-2-0-code-preview-260215"; Field = "ark_api_key" }
+    8  = @{ Provider = "Doubao (Volcengine Ark)"; Default = "doubao-seed-2-1-pro-260628"; Field = "ark_api_key" }
     9  = @{ Provider = "Kimi (Moonshot)";         Default = "kimi-k2.7-code";                      Field = "moonshot_api_key" }
     10 = @{ Provider = "MiMo";                    Default = "mimo-v2.5-pro";                       Field = "mimo_api_key" }
     11 = @{ Provider = "LinkAI";                  Default = "deepseek-v4-flash";                   Field = "linkai_api_key";    Linkai = $true }
@@ -477,7 +477,7 @@ function Select-Model {
         "MiniMax (MiniMax-M3, etc.)",
         "GLM (glm-5.2, etc.)",
         "Qwen (qwen3.7-plus, qwen3.7-max, etc.)",
-        "Doubao (doubao-seed-2.0, etc.)",
+        "Doubao (doubao-seed-2.1, etc.)",
         "Kimi (kimi-k2.7-code, etc.)",
         "MiMo (mimo-v2.5-pro, etc.)",
         ("LinkAI (" + (T "一个 Key 接入所有模型" "access all models via one API") + ")"),