diff --git a/apps/electron/src/main/ipc.ts b/apps/electron/src/main/ipc.ts
index 8a5bc4ff..09162b5c 100644
--- a/apps/electron/src/main/ipc.ts
+++ b/apps/electron/src/main/ipc.ts
@@ -66,6 +66,7 @@ import type {
   FeishuPresenceReport,
   FeishuNotifyMode,
   FeishuUpdateBindingInput,
+  DetachTabInput,
 } from '@proma/shared'
 import type { UserProfile, AppSettings } from '../types'
 import { getRuntimeStatus, getGitRepoStatus } from './lib/runtime-init'
@@ -156,6 +157,7 @@ import { watchAttachedDirectory, unwatchAttachedDirectory } from './lib/workspac
 import { getFeishuConfig, saveFeishuConfig, getDecryptedAppSecret } from './lib/feishu-config'
 import { feishuBridge } from './lib/feishu-bridge'
 import { presenceService } from './lib/feishu-presence'
+import { createDetachedWindow } from './lib/window-manager'
 
 /**
  * 注册 IPC 处理器
@@ -1574,6 +1576,16 @@ export function registerIpcHandlers(): void {
     }
   )
 
+  // ===== 窗口管理 =====
+
+  // 将标签页分离到新窗口
+  ipcMain.handle(
+    IPC_CHANNELS.DETACH_TAB,
+    async (_, input: DetachTabInput): Promise<void> => {
+      createDetachedWindow(input.type, input.sessionId, input.title, input.screenX, input.screenY)
+    }
+  )
+
   console.log('[IPC] IPC 处理器注册完成')
 
   // 注册更新 IPC 处理器
diff --git a/apps/electron/src/main/lib/window-manager.ts b/apps/electron/src/main/lib/window-manager.ts
new file mode 100644
index 00000000..37d6355e
--- /dev/null
+++ b/apps/electron/src/main/lib/window-manager.ts
@@ -0,0 +1,100 @@
+/**
+ * 窗口管理模块
+ *
+ * 负责创建分离的标签页窗口
+ */
+
+import { app, BrowserWindow, shell } from 'electron'
+import { join } from 'path'
+import { existsSync } from 'fs'
+
+/**
+ * Get the appropriate app icon path for the current platform
+ */
+function getIconPath(): string {
+  // esbuild 将所有代码打包到 dist/main.cjs，__dirname 始终为 dist/
+  const resourcesDir = join(__dirname, 'resources')
+
+  if (process.platform === 'darwin') {
+    return join(resourcesDir, 'icon.icns')
+  } else if (process.platform === 'win32') {
+    return join(resourcesDir, 'icon.ico')
+  } else {
+    return join(resourcesDir, 'icon.png')
+  }
+}
+
+/**
+ * 创建分离的标签页窗口
+ * @param tabType - 标签页类型 (chat | agent)
+ * @param sessionId - 会话 ID
+ * @param title - 窗口标题
+ * @param screenX - 鼠标释放时的屏幕 X 坐标
+ * @param screenY - 鼠标释放时的屏幕 Y 坐标
+ */
+export function createDetachedWindow(
+  tabType: string,
+  sessionId: string,
+  title: string,
+  screenX: number,
+  screenY: number
+): void {
+  const iconPath = getIconPath()
+  const iconExists = existsSync(iconPath)
+
+  const width = 1000
+  const height = 750
+
+  const win = new BrowserWindow({
+    width,
+    height,
+    minWidth: 600,
+    minHeight: 400,
+    x: Math.round(screenX - width / 2),
+    y: Math.round(screenY - 40),
+    icon: iconExists ? iconPath : undefined,
+    show: false,
+    title,
+    webPreferences: {
+      preload: join(__dirname, 'preload.cjs'),
+      contextIsolation: true,
+      nodeIntegration: false,
+    },
+    titleBarStyle: 'hiddenInset',
+    trafficLightPosition: { x: 18, y: 18 },
+    vibrancy: 'under-window',
+    visualEffectState: 'active',
+  })
+
+  // 构造带查询参数的 URL，渲染进程据此进入单标签模式
+  const query = `?detached=1&type=${encodeURIComponent(tabType)}&sessionId=${encodeURIComponent(sessionId)}&title=${encodeURIComponent(title)}`
+
+  const isDev = !app.isPackaged
+  if (isDev) {
+    win.loadURL(`http://localhost:5174${query}`)
+  } else {
+    win.loadFile(join(__dirname, 'renderer', 'index.html'), {
+      search: query,
+    })
+  }
+
+  win.once('ready-to-show', () => {
+    win.show()
+  })
+
+  // 拦截外部链接
+  win.webContents.on('will-navigate', (event, url) => {
+    if (isDev && url.startsWith('http://localhost:')) return
+    event.preventDefault()
+    if (url.startsWith('http://') || url.startsWith('https://')) {
+      shell.openExternal(url)
+    }
+  })
+
+  win.webContents.setWindowOpenHandler(({ url }) => {
+    if (url.startsWith('http://') || url.startsWith('https://')) {
+      shell.openExternal(url)
+    }
+    return { action: 'deny' }
+  })
+}
diff --git a/apps/electron/src/preload/index.ts b/apps/electron/src/preload/index.ts
index 10ba9c02..38e21dad 100644
--- a/apps/electron/src/preload/index.ts
+++ b/apps/electron/src/preload/index.ts
@@ -77,6 +77,7 @@ import type {
   FeishuNotifyMode,
   FeishuNotificationSentPayload,
   FeishuUpdateBindingInput,
+  DetachTabInput,
 } from '@proma/shared'
 import type { UserProfile, AppSettings } from '../types'
 
@@ -547,6 +548,10 @@ export interface ElectronAPI {
   onFeishuStatusChanged: (callback: (state: FeishuBridgeState) => void) => () => void
   /** 订阅飞书通知已发送事件 */
   onFeishuNotificationSent: (callback: (payload: FeishuNotificationSentPayload) => void) => () => void
+
+  // ===== 窗口管理 =====
+  /** 将标签页分离到新窗口 */
+  detachTab: (input: DetachTabInput) => Promise<void>
 }
 
 /**
@@ -1170,6 +1175,10 @@ const electronAPI: ElectronAPI = {
     ipcRenderer.on(FEISHU_IPC_CHANNELS.NOTIFICATION_SENT, listener)
     return () => { ipcRenderer.removeListener(FEISHU_IPC_CHANNELS.NOTIFICATION_SENT, listener) }
   },
+
+  // ===== 窗口管理 =====
+
+  detachTab: (input: DetachTabInput) => ipcRenderer.invoke(IPC_CHANNELS.DETACH_TAB, input),
 }
 
 // 将 API 暴露到渲染进程的 window 对象上
diff --git a/apps/electron/src/renderer/App.tsx b/apps/electron/src/renderer/App.tsx
index 82430c44..85bb23ae 100644
--- a/apps/electron/src/renderer/App.tsx
+++ b/apps/electron/src/renderer/App.tsx
@@ -5,12 +5,25 @@ import { AppShell } from './components/app-shell/AppShell'
 import { OnboardingView } from './components/onboarding/OnboardingView'
 import { TutorialBanner } from './components/tutorial/TutorialBanner'
 import { TooltipProvider } from './components/ui/tooltip'
+import { DetachedWindow } from './components/DetachedWindow'
 import { environmentCheckResultAtom } from './atoms/environment'
 import { conversationsAtom } from './atoms/chat-atoms'
 import { tabsAtom, splitLayoutAtom, openTab } from './atoms/tab-atoms'
 import type { AppShellContextType } from './contexts/AppShellContext'
 
+/** 检测是否为分离标签页窗口 */
+const isDetachedWindow = new URLSearchParams(window.location.search).get('detached') === '1'
+
 export default function App(): React.ReactElement {
+  // 分离标签页窗口：直接渲染单标签视图，跳过 onboarding / AppShell
+  if (isDetachedWindow) {
+    return <DetachedWindow />
+  }
+
+  return <MainApp />
+}
+
+function MainApp(): React.ReactElement {
   const setEnvironmentResult = useSetAtom(environmentCheckResultAtom)
   const store = useStore()
   const [isLoading, setIsLoading] = React.useState(true)
diff --git a/apps/electron/src/renderer/components/DetachedWindow.tsx b/apps/electron/src/renderer/components/DetachedWindow.tsx
new file mode 100644
index 00000000..ba72c12c
--- /dev/null
+++ b/apps/electron/src/renderer/components/DetachedWindow.tsx
@@ -0,0 +1,59 @@
+/**
+ * DetachedWindow — 分离标签页的独立窗口视图
+ *
+ * 通过 URL 查询参数获取 type / sessionId，
+ * 直接渲染对应的 ChatView 或 AgentView，不显示 TabBar 和侧边栏。
+ */
+
+import * as React from 'react'
+import { TooltipProvider } from './ui/tooltip'
+import { ChatView } from './chat/ChatView'
+import { AgentView } from './agent/AgentView'
+
+interface DetachedParams {
+  type: string
+  sessionId: string
+  title: string
+}
+
+function parseDetachedParams(): DetachedParams | null {
+  const params = new URLSearchParams(window.location.search)
+  const type = params.get('type')
+  const sessionId = params.get('sessionId')
+  const title = params.get('title') ?? ''
+
+  if (!type || !sessionId) return null
+  return { type, sessionId, title }
+}
+
+export function DetachedWindow(): React.ReactElement {
+  const params = React.useMemo(parseDetachedParams, [])
+
+  if (!params) {
+    return (
+      <div className="flex h-screen items-center justify-center bg-background text-muted-foreground text-sm">
+        无效的窗口参数
+      </div>
+    )
+  }
+
+  return (
+    <TooltipProvider delayDuration={200}>
+      <div className="flex flex-col h-screen bg-background">
+        {/* macOS 标题栏拖拽区域 */}
+        <div className="h-[34px] shrink-0 titlebar-drag-region flex items-center justify-center">
+          <span className="text-xs text-muted-foreground select-none">{params.title}</span>
+        </div>
+
+        {/* 内容区域 */}
+        <div className="flex-1 min-h-0">
+          {params.type === 'chat' ? (
+            <ChatView conversationId={params.sessionId} />
+          ) : (
+            <AgentView sessionId={params.sessionId} />
+          )}
+        </div>
+      </div>
+    </TooltipProvider>
+  )
+}
diff --git a/apps/electron/src/renderer/components/tabs/TabBar.tsx b/apps/electron/src/renderer/components/tabs/TabBar.tsx
index e4716c7f..085481ca 100644
--- a/apps/electron/src/renderer/components/tabs/TabBar.tsx
+++ b/apps/electron/src/renderer/components/tabs/TabBar.tsx
@@ -105,10 +105,37 @@ export function TabBar(): React.ReactElement {
       startIndex: idx,
     }
 
+    // 标签页分离检测阈值（像素）
+    const DETACH_THRESHOLD_Y = 60
+
     const handleMove = (me: PointerEvent): void => {
       if (!dragState.current) return
       const dx = Math.abs(me.clientX - dragState.current.startX)
       if (dx > 5) dragState.current.dragging = true
+
+      // 检测垂直方向拖出标签栏 → 分离标签页
+      const dy = me.clientY - e.clientY
+      if (dy > DETACH_THRESHOLD_Y && tabs.length > 1) {
+        const tab = tabs.find((t) => t.id === dragState.current?.tabId)
+        if (!tab) return
+
+        // 清理拖拽状态
+        document.removeEventListener('pointermove', handleMove)
+        document.removeEventListener('pointerup', handleUp)
+        dragState.current = null
+
+        // 调用 IPC 分离标签页
+        window.electronAPI.detachTab({
+          type: tab.type,
+          sessionId: tab.id,
+          title: tab.title,
+          screenX: me.screenX,
+          screenY: me.screenY,
+        })
+
+        // 关闭当前窗口中的标签
+        handleClose(tab.id)
+      }
     }
 
     const handleUp = (): void => {
@@ -119,7 +146,7 @@ export function TabBar(): React.ReactElement {
 
     document.addEventListener('pointermove', handleMove)
     document.addEventListener('pointerup', handleUp)
-  }, [tabs])
+  }, [tabs, handleClose])
 
   // 水平滚动支持
   const handleWheel = React.useCallback((e: React.WheelEvent) => {
diff --git a/packages/shared/src/types/runtime.ts b/packages/shared/src/types/runtime.ts
index 86e62375..bc11fd48 100644
--- a/packages/shared/src/types/runtime.ts
+++ b/packages/shared/src/types/runtime.ts
@@ -194,8 +194,26 @@ export const IPC_CHANNELS = {
   GET_GIT_REPO_STATUS: 'git:get-repo-status',
   /** 在系统默认浏览器中打开外部链接 */
   OPEN_EXTERNAL: 'shell:open-external',
+  /** 将标签页分离到新窗口 */
+  DETACH_TAB: 'window:detach-tab',
 } as const
 
+/**
+ * 标签页分离请求参数
+ */
+export interface DetachTabInput {
+  /** 标签页类型 */
+  type: 'chat' | 'agent'
+  /** 会话 ID */
+  sessionId: string
+  /** 标签页标题 */
+  title: string
+  /** 鼠标释放时的屏幕 X 坐标 */
+  screenX: number
+  /** 鼠标释放时的屏幕 Y 坐标 */
+  screenY: number
+}
+
 /**
  * IPC 通道名称类型
  */