diff --git a/Rs.DeweyTester/Entitys/TestFixtureManager.cs b/Rs.DeweyTester/Entitys/TestFixtureManager.cs
index 961c3e2..88df3c8 100644
--- a/Rs.DeweyTester/Entitys/TestFixtureManager.cs
+++ b/Rs.DeweyTester/Entitys/TestFixtureManager.cs
@@ -965,6 +965,14 @@ namespace Rs.MotionPlat.Entitys
                     clientSockets.Add(clientSocket);
                     IPEndPoint endPoint = ((IPEndPoint)clientSocket.RemoteEndPoint);
                     MessageQueue.Instance.Insert($"ip:{endPoint.Address.ToString()},port:{endPoint.Port.ToString()} connected!");
+                    if (GlobalVar.IsSimTest)
+                    {
+                        if(endPoint.Address.ToString()!="127.0.0.1")
+                        {
+                            clientSocket.Close();
+                            continue;
+                        }
+                    }
                     ThreadPool.QueueUserWorkItem((obj) => {
                         List<byte> registData=new List<byte>();
                         Socket soct=(Socket)obj;
@@ -984,11 +992,10 @@ namespace Rs.MotionPlat.Entitys
                                     }
                                     else
                                     {
-
                                         string content=Encoding.ASCII.GetString(registData.ToArray());
                                         //MessageQueue.Instance.Insert($">>> ip:{ep.Address.ToString()},port:{ep.Port.ToString()},{content}");
                                         string[] items = content.TrimEnd(new char[] { '$' }).Split('#');
-                                        Thread.Sleep(500);
+                                        Thread.Sleep(200);
                                         string reg = "Register#1$";
                                         int sendLen = clientSocket.Send(Encoding.ASCII.GetBytes(reg));
                                         MessageQueue.Instance.Insert($" >>> ip:{ep.Address.ToString()},port:{ep.Port.ToString()},{reg}");