diff --git a/channel/web/chat.html b/channel/web/chat.html
index 01e1d0e4..0b15e21c 100644
--- a/channel/web/chat.html
+++ b/channel/web/chat.html
@@ -907,6 +907,28 @@
                                     </div>
                                     <span class="text-xs text-slate-400 ml-2 font-mono">run.log</span>
                                     <div class="flex-1"></div>
+                                    <div class="flex items-center gap-3 mr-2">
+                                        <label class="flex items-center gap-1 cursor-pointer select-none">
+                                            <input type="checkbox" class="log-filter-cb" data-level="debug" checked>
+                                            <span class="text-xs text-slate-400">DEBUG</span>
+                                        </label>
+                                        <label class="flex items-center gap-1 cursor-pointer select-none">
+                                            <input type="checkbox" class="log-filter-cb" data-level="info" checked>
+                                            <span class="text-xs text-blue-400">INFO</span>
+                                        </label>
+                                        <label class="flex items-center gap-1 cursor-pointer select-none">
+                                            <input type="checkbox" class="log-filter-cb" data-level="warning" checked>
+                                            <span class="text-xs text-yellow-400">WARNING</span>
+                                        </label>
+                                        <label class="flex items-center gap-1 cursor-pointer select-none">
+                                            <input type="checkbox" class="log-filter-cb" data-level="error" checked>
+                                            <span class="text-xs text-red-400">ERROR</span>
+                                        </label>
+                                        <label class="flex items-center gap-1 cursor-pointer select-none">
+                                            <input type="checkbox" class="log-filter-cb" data-level="critical" checked>
+                                            <span class="text-xs text-white font-bold">CRITICAL</span>
+                                        </label>
+                                    </div>
                                     <div class="flex items-center gap-1.5">
                                         <span class="w-2 h-2 rounded-full bg-emerald-500 animate-pulse"></span>
                                         <span class="text-xs text-slate-500" data-i18n="logs_live">实时</span>
diff --git a/channel/web/static/css/console.css b/channel/web/static/css/console.css
index 83693c32..78fcea1a 100644
--- a/channel/web/static/css/console.css
+++ b/channel/web/static/css/console.css
@@ -606,6 +606,14 @@
 }
 .tool-error-text { color: #f87171; }
 
+/* Log level highlighting */
+.log-line { display: block; }
+.log-line-debug    { color: #94a3b8; }
+.log-line-info     { background-color: rgba(59, 130, 246, 0.08); }
+.log-line-warning  { background-color: rgba(234, 179, 8, 0.15); color: #fde68a; }
+.log-line-error    { background-color: rgba(239, 68, 68, 0.15); color: #fca5a5; }
+.log-line-critical { background-color: rgba(239, 68, 68, 0.35); color: #ffffff; font-weight: bold; }
+
 /* Tool failed state */
 .agent-tool-step.tool-failed .tool-name { color: #f87171; }
 
diff --git a/channel/web/static/js/console.js b/channel/web/static/js/console.js
index 44ec1467..80817c4c 100644
--- a/channel/web/static/js/console.js
+++ b/channel/web/static/js/console.js
@@ -4022,6 +4022,51 @@ function loadTasksView() {
 // =====================================================================
 let logEventSource = null;
 
+function logLevelClass(line) {
+    if (/\[CRITICAL\]/.test(line)) return 'log-line-critical';
+    if (/\[ERROR\]/.test(line))    return 'log-line-error';
+    if (/\[WARNING\]/.test(line))  return 'log-line-warning';
+    if (/\[INFO\]/.test(line))     return 'log-line-info';
+    if (/\[DEBUG\]/.test(line))    return 'log-line-debug';
+    return '';
+}
+
+function getHiddenLevels() {
+    const hidden = new Set();
+    document.querySelectorAll('.log-filter-cb').forEach(function(cb) {
+        if (!cb.checked) hidden.add('log-line-' + cb.dataset.level);
+    });
+    return hidden;
+}
+
+function applyLogFilter() {
+    const hidden = getHiddenLevels();
+    document.querySelectorAll('#log-output .log-line').forEach(function(span) {
+        const level = span.classList[1] || '';
+        span.style.display = hidden.has(level) ? 'none' : '';
+    });
+}
+
+function appendLogLines(output, text) {
+    const hidden = getHiddenLevels();
+    let lastLevelClass = '';
+    const lines = text.split('\n');
+    lines.forEach(function(line, i) {
+        if (i === lines.length - 1 && line === '') return;
+        const span = document.createElement('span');
+        const levelClass = logLevelClass(line) || lastLevelClass;
+        if (logLevelClass(line)) lastLevelClass = levelClass;
+        span.className = 'log-line ' + levelClass;
+        span.textContent = line + '\n';
+        if (hidden.has(levelClass)) span.style.display = 'none';
+        output.appendChild(span);
+    });
+}
+
+document.addEventListener('change', function(e) {
+    if (e.target.classList.contains('log-filter-cb')) applyLogFilter();
+});
+
 function startLogStream() {
     if (logEventSource) return;
     const output = document.getElementById('log-output');
@@ -4033,10 +4078,11 @@ function startLogStream() {
         try { item = JSON.parse(e.data); } catch (_) { return; }
 
         if (item.type === 'init') {
-            output.textContent = item.content || '';
+            output.innerHTML = '';
+            appendLogLines(output, item.content || '');
             output.scrollTop = output.scrollHeight;
         } else if (item.type === 'line') {
-            output.textContent += item.content;
+            appendLogLines(output, item.content);
             output.scrollTop = output.scrollHeight;
         } else if (item.type === 'error') {
             output.textContent = item.message || 'Error loading logs';