diff --git a/Assets/Scripts/UI/Pages/HomePage/HomePageCtrl.cs b/Assets/Scripts/UI/Pages/HomePage/HomePageCtrl.cs
index 614860c..2837542 100644
--- a/Assets/Scripts/UI/Pages/HomePage/HomePageCtrl.cs
+++ b/Assets/Scripts/UI/Pages/HomePage/HomePageCtrl.cs
@@ -41,6 +41,7 @@ namespace Kill.UI.Pages
         bool hasWifi = false;
         bool isPollingOnline = false;
         bool stopPolling = false;
+        bool isAppForeground = true; // 是否处于前台：仅前台进行在线状态轮询
 
         // UI 组件引用
         public HomePageDeviceState deviceState;
@@ -117,8 +118,13 @@ namespace Kill.UI.Pages
         }
         void OnApplicationPause(bool pause)
         {
+            isAppForeground = !pause;
             LockButtonPlane.SetActive(true);
         }
+        void OnApplicationFocus(bool hasFocus)
+        {
+            isAppForeground = hasFocus;
+        }
         void OnDestroy()
         {
             StopDeviceOnlineStatusPolling();
@@ -2021,8 +2027,15 @@ namespace Kill.UI.Pages
 
             while (!stopPolling && selectedDevice != null)
             {
-                // 每 5s 检测一次设备 WiFi 在线状态
-                await System.Threading.Tasks.Task.Delay(5000);
+                // 每 3s 检测一次设备 WiFi 在线状态
+                await System.Threading.Tasks.Task.Delay(3000);
+
+                if (stopPolling || selectedDevice == null)
+                    break;
+
+                // 仅前台进行轮询：后台时挂起等待，切回前台后立即执行一次
+                while (!stopPolling && !isAppForeground)
+                    await System.Threading.Tasks.Task.Delay(500);
 
                 if (stopPolling || selectedDevice == null)
                     break;
@@ -2084,6 +2097,23 @@ namespace Kill.UI.Pages
                         deviceState?.UpdateDeviceState(hasBluetooth, hasWifi);
                     });
                 }
+
+                // 在线状态处理后拉取一次设备配置，与本地快照比对，有变化则刷新主页UI
+                DeviceConfig configBefore = DataManager.Instance.deviceConfig?.Clone();
+                await DataManager.Instance.GetDeviceConfig(selectedDevice.ble_mac);
+                if (stopPolling) break;
+
+                var changedFields = DataManager.Instance.deviceConfig?.GetChangedFields(configBefore);
+                if (changedFields != null && changedFields.Count > 0)
+                {
+                    Debug.Log($"[HomePageCtrl] 检测到设备配置变化: {string.Join(",", changedFields.Keys)}，刷新主页UI");
+                    pendingUIUpdates.Add(() =>
+                    {
+                        // await 期间蓝牙可能已连接，避免用 WiFi 数据覆盖 BLE 数据
+                        if (hasBluetooth) return;
+                        InitDeviceUIFromConfig();
+                    });
+                }
             }
 
             isPollingOnline = false;