diff --git a/Class/AsyncTcpServer.cs b/Class/AsyncTcpServer.cs
index 692853b..41e0c0b 100644
--- a/Class/AsyncTcpServer.cs
+++ b/Class/AsyncTcpServer.cs
@@ -24,7 +24,10 @@ namespace ForwardingServerUI.Class
             public required string SERRVERPASWORD { get; set; }
             public required string MachineVer { get; set; }
         }
+
+        private static Timer? _timer;
         public static TcpService service = new TcpService();
+
         public static async Task TcpMain()
         {
             //TcpService service = new TcpService();
@@ -157,9 +160,10 @@ namespace ForwardingServerUI.Class
 
             Console.WriteLine("TcpServer:Run");
 
-            Timer timer = new Timer(TimerCallback, null, TimeSpan.FromSeconds(90), TimeSpan.FromSeconds(30));
+            //启动检查循环定时器
+            _timer = new Timer(TimerCallback, null, TimeSpan.FromSeconds(90), TimeSpan.FromSeconds(30));
         }
-              
+
         private static async void TimerCallback(object? state)
         {
             try