diff --git a/ViewModels/MainWindowViewModel.cs b/ViewModels/MainWindowViewModel.cs
index a6d0c74..ae687f7 100644
--- a/ViewModels/MainWindowViewModel.cs
+++ b/ViewModels/MainWindowViewModel.cs
@@ -259,7 +259,7 @@ namespace OnlineUserPool.ViewModels
 
         private void SendMessage(Collection<HostModel> clients, List<MsgModel> msgModels)
         {
-            if (!clients.Any())
+            if (!clients.Any() || !msgModels.Any())
             {
                 return;
             }
@@ -405,15 +405,22 @@ namespace OnlineUserPool.ViewModels
         }
 
         private void CientDisconnected(EndPoint point)
-        {
-            var client = Clients.FirstOrDefault(f => f.IPEndPoint.ToString() == point.ToString());
-            if (client != null)
+        {            
+            dispatcher.Invoke(() =>
             {
-                dispatcher.Invoke(() =>
+                try
                 {
-                    Clients.Remove(client);
-                });
-            }
+                    var client = Clients.FirstOrDefault(f => f.IPEndPoint.ToString() == point.ToString());
+                    if (client != null)
+                    {
+                        Clients.Remove(client);
+                    }
+                }
+                catch(Exception ex)
+                {
+                    Log.Information("在CientDisconnected触发以后，删除client时报错了,"+ ex.Message +", " + ex.StackTrace);
+                }
+            });
         }
     }