diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 1652503..dcf061f 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -1852,6 +1852,7 @@ namespace ConductivityApp
                 //}
                 _plc?.Write("M1.0", true); // 夹紧
                 Console.WriteLine("执行夹紧操作");
+                _plc.Close();
             }
             catch (Exception ex)
             {
@@ -1869,6 +1870,7 @@ namespace ConductivityApp
                 //}
                 _plc?.Write("M1.0", false); // 松开
                 Console.WriteLine("执行松开操作");
+                _plc.Close();
             }
             catch (Exception ex)
             {