diff --git a/src/App.vue b/src/App.vue
index c455798..982baa7 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,7 +1,15 @@
 <script setup lang="ts">
-import { useBackendOnline } from './composables'
+// import { useBackendOnline } from './composables'
+import { useAPIOnline } from './composables/online'
 
-const online = useBackendOnline()
+const online = useAPIOnline()
+
+onMounted(() => {
+  online.connect()
+})
+onUnmounted(() => {
+  online.disconnect()
+})
 </script>
 
 <template>
diff --git a/src/components/DefaultLayout.vue b/src/components/DefaultLayout.vue
index 154fc9f..a6eeaa9 100644
--- a/src/components/DefaultLayout.vue
+++ b/src/components/DefaultLayout.vue
@@ -34,7 +34,7 @@ import {
   SidebarRail,
 } from '~/components/ui/sidebar'
 
-import { authCode, useBackendOnline } from '../composables'
+import { authCode } from '../composables'
 
 const router = useRouter()
 
@@ -99,8 +99,6 @@ onMounted(() => {
     router.push('/auth')
   }
 })
-
-const online = useBackendOnline()
 </script>
 
 <template>
@@ -113,7 +111,7 @@ const online = useBackendOnline()
         <Sidebar collapsible="icon">
           <SidebarHeader>
             <Alert>
-              <AlertTitle>服务状态正常 {{ online.isOnline }}</AlertTitle>
+              <AlertTitle>服务状态正常 </AlertTitle>
             </Alert>
           </SidebarHeader>
           <SidebarContent>
diff --git a/src/composables/fetch.ts b/src/composables/fetch.ts
index 055fa64..7dacc4d 100644
--- a/src/composables/fetch.ts
+++ b/src/composables/fetch.ts
@@ -25,50 +25,50 @@ export const baseFetch = createFetch({
 
 })
 
-export async function doCheckOnline() {
-  let resp = null
-  try {
-    resp = await baseFetch('/ping', {
-      timeout: 2000,
-    })
-    const { error } = resp
-    if (error.value)
-      throw new Error(error.value)
-    const status = resp.response.value?.status
-    if (!status) {
-      return false
-    }
-    if (status === 200) {
-      return true
-    }
-    else if (status >= 400 && status < 500) {
-      return true
-    }
-    return false
-  }
-  catch (err) {
-    if (resp?.response.value?.status === 401) {
-      return true
-    }
-    console.error(err)
-    return false
-  }
-}
+// export async function doCheckOnline() {
+//   let resp = null
+//   try {
+//     resp = await baseFetch('/ping', {
+//       timeout: 2000,
+//     })
+//     const { error } = resp
+//     if (error.value)
+//       throw new Error(error.value)
+//     const status = resp.response.value?.status
+//     if (!status) {
+//       return false
+//     }
+//     if (status === 200) {
+//       return true
+//     }
+//     else if (status >= 400 && status < 500) {
+//       return true
+//     }
+//     return false
+//   }
+//   catch (err) {
+//     if (resp?.response.value?.status === 401) {
+//       return true
+//     }
+//     console.error(err)
+//     return false
+//   }
+// }
 
-export const useBackendOnline = createSharedComposable(() => {
-  const isOnline = ref(true)
+// export const useBackendOnline = createSharedComposable(() => {
+//   const isOnline = ref(true)
 
-  const useCheckInterval = useIntervalFn(() => {
-    doCheckOnline().then((online) => {
-      isOnline.value = online
-    })
-  }, 5000, {
-    immediate: true,
-    immediateCallback: true,
-  })
-  useCheckInterval.resume()
+//   const useCheckInterval = useIntervalFn(() => {
+//     doCheckOnline().then((online) => {
+//       isOnline.value = online
+//     })
+//   }, 5000, {
+//     immediate: true,
+//     immediateCallback: true,
+//   })
+//   useCheckInterval.resume()
 
-  return {
-    isOnline,
-  }
-})
+//   return {
+//     isOnline,
+//   }
+// })
diff --git a/src/composables/online.ts b/src/composables/online.ts
index 519844d..507a426 100644
--- a/src/composables/online.ts
+++ b/src/composables/online.ts
@@ -1,3 +1,147 @@
-export const hasConnection = ref(false)
+import { useIntervalFn } from '@vueuse/core'
+import { API_BASE_URL } from '~/CONSTANT'
 
-// get `https://`
+interface UseAPIOnlineOptions {
+  /**
+   * WebSocket endpoint URL
+   */
+  url?: string
+  /**
+   * 心跳间隔(ms)
+   * @default 30000
+   */
+  heartbeatInterval?: number
+  /**
+   * 重连间隔(ms)
+   * @default 5000
+   */
+  reconnectDelay?: number
+  /**
+   * 连接成功回调
+   */
+  onConnected?: () => void
+  /**
+   * 断开连接回调
+   */
+  onDisconnected?: () => void
+  /**
+   * 连接错误回调
+   */
+  onError?: (error: any) => void
+}
+
+export function useAPIOnline(options: UseAPIOnlineOptions = {}) {
+  const {
+    url = `ws://${API_BASE_URL.replace('https://', '').replace('http://', '')}/ping/ws`,
+    heartbeatInterval = 30000,
+    reconnectDelay = 5000,
+    onConnected,
+    onDisconnected,
+    onError,
+  } = options
+
+  const ws = ref<WebSocket | null>(null)
+  const isOnline = ref(false)
+  const isConnecting = ref(false)
+
+  // 最后一次收到pong的时间戳
+  const lastPongTime = ref(0)
+
+  // 检查是否需要重连的定时器
+  const { pause: pauseHealthCheck, resume: resumeHealthCheck } = useIntervalFn(() => {
+    const now = Date.now()
+    // 如果45秒没有收到pong，认为连接断开
+    if (now - lastPongTime.value > 45000) {
+      isOnline.value = false
+      reconnect()
+    }
+  }, 15000)
+
+  // 心跳定时器
+  const { pause: pauseHeartbeat, resume: resumeHeartbeat } = useIntervalFn(() => {
+    if (ws.value?.readyState === WebSocket.OPEN) {
+      ws.value.send(JSON.stringify({ type: 'ping' }))
+    }
+  }, heartbeatInterval)
+
+  const connect = () => {
+    if (isConnecting.value || (ws.value?.readyState === WebSocket.CONNECTING)) {
+      return
+    }
+
+    isConnecting.value = true
+
+    // 清理旧的连接
+    if (ws.value) {
+      ws.value.close()
+      ws.value = null
+    }
+
+    const socket = new WebSocket(url)
+
+    socket.onopen = () => {
+      isOnline.value = true
+      isConnecting.value = false
+      lastPongTime.value = Date.now()
+      resumeHeartbeat()
+      resumeHealthCheck()
+      onConnected?.()
+    }
+
+    socket.onclose = () => {
+      isOnline.value = false
+      isConnecting.value = false
+      pauseHeartbeat()
+      pauseHealthCheck()
+      onDisconnected?.()
+      setTimeout(reconnect, reconnectDelay)
+    }
+
+    socket.onerror = (error) => {
+      isOnline.value = false
+      isConnecting.value = false
+      pauseHeartbeat()
+      pauseHealthCheck()
+      onError?.(error)
+    }
+
+    socket.onmessage = (event) => {
+      try {
+        const data = JSON.parse(event.data)
+        if (data.type === 'pong') {
+          lastPongTime.value = Date.now()
+        }
+      }
+      catch (e) {
+        console.error('Failed to parse websocket message:', e)
+      }
+    }
+
+    ws.value = socket
+  }
+
+  function reconnect() {
+    if (!isOnline.value && !isConnecting.value) {
+      connect()
+    }
+  }
+
+  const disconnect = () => {
+    if (ws.value) {
+      ws.value.close()
+      ws.value = null
+    }
+    isOnline.value = false
+    isConnecting.value = false
+    pauseHeartbeat()
+    pauseHealthCheck()
+  }
+
+  return {
+    isOnline,
+    isConnecting,
+    connect,
+    disconnect,
+    reconnect,
+  }
+}