diff --git a/app/src/main/java/com/shuwei/dish/match/scale/ScaleServiceManager.kt b/app/src/main/java/com/shuwei/dish/match/scale/ScaleServiceManager.kt
index 6eb65fe..9d65b23 100644
--- a/app/src/main/java/com/shuwei/dish/match/scale/ScaleServiceManager.kt
+++ b/app/src/main/java/com/shuwei/dish/match/scale/ScaleServiceManager.kt
@@ -111,16 +111,16 @@ object ScaleServiceManager {
             client.connect(remoteId, host, port)
         }
 
-        // mDNS 发现：发现子设备 → 建立 WebSocket 连接；设备离线 → 断开连接并清除数据
+        // mDNS 发现：发现子设备 → 建立 WebSocket 连接；设备离线 → 仅清除 UDP 缓存，WebSocket 层自行重连
         mdnsDiscovery = MdnsDiscoveryManager(context).also { discovery ->
             discovery.onDeviceFound = { remoteId, host, port ->
                 onDeviceFound(remoteId, host, port)
             }
             discovery.onDeviceLost = { remoteId ->
-                Log.d(TAG, "子设备离线 $remoteId, 断开连接并清除数据")
-                client.disconnect(remoteId)
-                aggregator?.removeDevice(remoteId)
+                // mDNS 抖动不永久断开，WebSocket 层会持续重连直到网络恢复
+                // 仅清除 UDP 缓存，确保 UDP 重新发现时能再次触发 onDeviceFound
                 udpReceiver?.removeDevice(remoteId)
+                Log.d(TAG, "子设备 mDNS 离线: $remoteId, 保持 WebSocket 重连")
             }
             discovery.startDiscovery()
         }
diff --git a/app/src/main/java/com/shuwei/dish/match/scale/ScaleWebSocketClient.kt b/app/src/main/java/com/shuwei/dish/match/scale/ScaleWebSocketClient.kt
index 89eed4a..109f185 100644
--- a/app/src/main/java/com/shuwei/dish/match/scale/ScaleWebSocketClient.kt
+++ b/app/src/main/java/com/shuwei/dish/match/scale/ScaleWebSocketClient.kt
@@ -100,10 +100,10 @@ class ScaleWebSocketClient {
 
     /**
      * 指数退避重连
+     * 入口不拦截 removedDevices，仅在延迟任务执行前检查，
+     * 确保 disconnect() 后已入队的任务不执行，但新断线事件始终能进入重连流程
      */
     private fun scheduleReconnect(deviceId: String, host: String, port: Int) {
-        if (removedDevices.contains(deviceId)) return
-
         val delay = reconnectDelays[deviceId] ?: RECONNECT_BASE_MS
         Log.d(TAG, "将在 ${delay}ms 后重连子设备: $deviceId")