diff --git a/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs b/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs
index 7a4c4f5..645fc34 100644
--- a/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs
+++ b/Plane.FormationCreator/ViewModels/ControlPanelViewModel.cs
@@ -45,6 +45,22 @@ namespace Plane.FormationCreator.ViewModels
             set { Set(nameof(AltP), ref _AltP, value); }
         }
 
+
+        private string _RTKState = "RTK未发送";
+        public string RTKState
+        {
+            get { return _RTKState; }
+            set { Set(nameof(RTKState), ref _RTKState, value); }
+        }
+
+        private string _RTKbtntxt = "发送RTK";
+        public string RTKbtntxt
+        {
+            get { return _RTKbtntxt; }
+            set { Set(nameof(RTKbtntxt), ref _RTKbtntxt, value); }
+        }
+
+
         private ICommand _UnlockCommand;
         public ICommand UnlockCommand
         {
@@ -204,28 +220,36 @@ namespace Plane.FormationCreator.ViewModels
             {
                 return _SendRTKCommand ?? (_SendRTKCommand = new RelayCommand(async () =>
                 {
-                    Rtkport = new SerialPortConnection(RTKcomvalue,57600) as IConnection;
-                    await Rtkport.OpenAsync();
-                    if (!Rtkport.IsOpen)
+                    if (!trkthreadrun)
                     {
-                        Alert.Show("无法打开" + RTKcomvalue , "警告", MessageBoxButton.OK, MessageBoxImage.Warning);
-                        return;
-                    }
-                    trkthreadrun = true;  //开始运行后台任务
-                                          /*  //线程方式后台运行rtk转发任务
-                                          thrtk = new System.Threading.Thread(new System.Threading.ThreadStart(mainloop))
-                                          {
-                                              IsBackground = true,
-                                              Name = "injectgps"
-                                          };
-                                          thrtk.Start();
-                                          */
-                                          //后台任务方式运行rtk转发任务
-                        await Task.Run(async () =>
+
+
+                        Rtkport = new SerialPortConnection(RTKcomvalue, 57600) as IConnection;
+                        await Rtkport.OpenAsync();
+                        if (!Rtkport.IsOpen)
                         {
-                            //读取RTK数据循环
-                            while (trkthreadrun)
+                            Alert.Show("无法打开" + RTKcomvalue, "警告", MessageBoxButton.OK, MessageBoxImage.Warning);
+                            return;
+                        }
+                        trkthreadrun = true;  //开始运行后台任务
+                                              /*  //线程方式后台运行rtk转发任务
+                                              thrtk = new System.Threading.Thread(new System.Threading.ThreadStart(mainloop))
+                                              {
+                                                  IsBackground = true,
+                                                  Name = "injectgps"
+                                              };
+                                              thrtk.Start();
+                                              */
+                                              //后台任务方式运行rtk转发任务
+                        Alert.Show("RTK数据开始发送", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                        RTKState = "RTK数据发送中";
+                        RTKbtntxt = "停止RTK";
+
+                        await Task.Run(async () =>
                             {
+                                //读取RTK数据循环
+                                while (trkthreadrun)
+                                {
                                     //读入RTK数据
                                     var packet = await ReadRTKPacketAsync().ConfigureAwait(false);
                                     //分发到每个飞机
@@ -235,10 +259,27 @@ namespace Plane.FormationCreator.ViewModels
                                     }
 
 
-                                await Task.Delay(200).ConfigureAwait(false);
+                                    await Task.Delay(200).ConfigureAwait(false);
+
+                                }
+                            }).ConfigureAwait(false);
+                            Alert.Show("RTK数据停止发送", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+
+                    }
+                    else//停止RTK
+                    {
+                        trkthreadrun = false;
+                        Rtkport.Close();
+                        Rtkport = null;
+
+                        RTKState = "未发送RTK数据";
+                        RTKbtntxt = "发送RTK";
+
+
+
+
+                    }
 
-                            }
-                        }).ConfigureAwait(false);
 
                     /*
 
diff --git a/Plane.FormationCreator/Views/ControlPanelView.xaml b/Plane.FormationCreator/Views/ControlPanelView.xaml
index 705cc08..cf615ef 100644
--- a/Plane.FormationCreator/Views/ControlPanelView.xaml
+++ b/Plane.FormationCreator/Views/ControlPanelView.xaml
@@ -67,9 +67,14 @@
                      HorizontalContentAlignment="Right"
                      Text="{Binding RTKcomvalue, UpdateSourceTrigger=PropertyChanged}" 
                 />
-            <Button Content="发送RTK"
+            <Button Content="{Binding Path=RTKbtntxt}" 
+                   
                     Command="{Binding SendRTKCommand}" />
-         </WrapPanel>
+            <TextBlock 
+                   Margin="5,5,5,5"
+                     Text="{Binding Path=RTKState}"
+                        />
+        </WrapPanel>
 
 
         <!--// 林俊清, 20150920, 目前不再使用 FormationController，删除相关按钮。