diff --git a/miniprogram/pages/equipment/equipment.ts b/miniprogram/pages/equipment/equipment.ts
index 0ce7d57..5b2c1e1 100644
--- a/miniprogram/pages/equipment/equipment.ts
+++ b/miniprogram/pages/equipment/equipment.ts
@@ -93,10 +93,11 @@ Page({
             })
     },
 
-    /** 检查缓存设备：已连接则直接标记，未连接则扫描自动连接 */
+    /** 检查缓存设备：已连接则直接标记，未连接则扫描匹配 deviceId 后自动连接 */
     _checkAndAutoConnect() {
         const cachedRaw = wx.getStorageSync('connectDeviceInfo') as RawDevice | null
-        if (!cachedRaw) return
+        const targetDeviceId = cachedRaw?.deviceId as string | undefined
+        if (!targetDeviceId) return
 
         // 已连接且 deviceInfo 就绪，直接标记列表
         if (lefuService.isConnected && lefuService.deviceInfo?.serialNumber) {
@@ -104,19 +105,34 @@ Page({
             return
         }
 
-        // 未连接，直接用缓存对象连，不走扫描
+        let scanTimer: number | null = null
+
         wx.showLoading({ title: '连接中...', mask: true })
         wx.openBluetoothAdapter({
             success: () => {
-                lefuService.connect(cachedRaw)
-                lefuService.onDeviceConnect(() => {
+                scanTimer = setTimeout(() => {
+                    lefuService.stopScan()
                     wx.hideLoading()
+                }, 15000)
+
+                lefuService.onDevicesList((devices) => {
+                    const matched = devices.find(d => d.raw.deviceId === targetDeviceId)
+                    if (!matched) return
+                    if (scanTimer !== null) { clearTimeout(scanTimer); scanTimer = null }
+                    lefuService.stopScan()
+                    lefuService.connect(matched.raw)
+                    lefuService.onDeviceConnect(() => {
+                        wx.hideLoading()
+                        wx.setStorageSync('connectDeviceInfo', matched.raw)
+                    })
+                    lefuService.onDeviceInfo((info) => {
+                        this._markConnected(info.serialNumber as string)
+                    })
                 })
-                lefuService.onDeviceInfo((info) => {
-                    this._markConnected(info.serialNumber as string)
-                })
+                lefuService.startScan()
             },
             fail: () => {
+                if (scanTimer !== null) { clearTimeout(scanTimer); scanTimer = null }
                 wx.hideLoading()
             },
         })
@@ -131,32 +147,46 @@ Page({
         this.setData({ deviceList: list })
     },
 
-    /** 点击「连接」：断开当前、直接用 connectDeviceInfo 连接指定设备 */
+    /** 点击「连接」：扫描周边设备，找到 deviceId 匹配的设备后连接 */
     onTapConnect(e: WechatMiniprogram.TouchEvent) {
         const connectDeviceInfoStr = e.currentTarget.dataset.connectDeviceInfo as string
-        let rawDevice: RawDevice | null = null
+        let cachedDevice: RawDevice | null = null
         try {
-            rawDevice = JSON.parse(connectDeviceInfoStr || '{}')
+            cachedDevice = JSON.parse(connectDeviceInfoStr || '{}')
         } catch {}
-        if (!rawDevice) return
+        const targetDeviceId = cachedDevice?.deviceId as string | undefined
+        if (!targetDeviceId) return
 
-        if (lefuService.isConnected) {
-            lefuService.disconnect()
-        }
-        const list = this.data.deviceList.map(item => ({ ...item, connected: false }))
-        this.setData({ deviceList: list })
+        if (lefuService.isConnected) lefuService.disconnect()
+        this.setData({ deviceList: this.data.deviceList.map(item => ({ ...item, connected: false })) })
 
-        wx.showLoading({ title: '连接中...', mask: true })
+        let scanTimer: number | null = null
+
+        wx.showLoading({ title: '扫描中...', mask: true })
         wx.openBluetoothAdapter({
             success: () => {
-                lefuService.connect(rawDevice!)
-                lefuService.onDeviceConnect(() => {
+                scanTimer = setTimeout(() => {
+                    lefuService.stopScan()
                     wx.hideLoading()
-                    wx.setStorageSync('connectDeviceInfo', rawDevice)
-                })
-                lefuService.onDeviceInfo((info) => {
-                    this._markConnected(info.serialNumber as string)
+                    wx.showToast({ title: '未找到设备', icon: 'none' })
+                }, 15000)
+
+                lefuService.onDevicesList((devices) => {
+                    const matched = devices.find(d => d.raw.deviceId === targetDeviceId)
+                    if (!matched) return
+                    if (scanTimer !== null) { clearTimeout(scanTimer); scanTimer = null }
+                    lefuService.stopScan()
+                    wx.showLoading({ title: '连接中...', mask: true })
+                    lefuService.connect(matched.raw)
+                    lefuService.onDeviceConnect(() => {
+                        wx.hideLoading()
+                        wx.setStorageSync('connectDeviceInfo', matched.raw)
+                    })
+                    lefuService.onDeviceInfo((info) => {
+                        this._markConnected(info.serialNumber as string)
+                    })
                 })
+                lefuService.startScan()
             },
             fail: () => {
                 wx.hideLoading()