diff --git a/bin/GUIWindows.py b/bin/GUIWindows.py
index d93c3e8..8e6fd27 100644
--- a/bin/GUIWindows.py
+++ b/bin/GUIWindows.py
@@ -51,7 +51,9 @@ class Window(formType, baseType):
             self.start_thread()
         else:
             self.start_run_db()
-        
+        # 按钮置灰
+        self.startButton.setEnabled(not self.startButton.isEnabled())
+
 
     @Slot()
     def stop(self):
@@ -61,6 +63,8 @@ class Window(formType, baseType):
             self.stop_run_file()
         else:
             self.stop_run_db()
+        # 按钮恢复
+        self.startButton.setEnabled(not self.startButton.isEnabled())
 
     @Slot()
     def conntest(self):
@@ -104,9 +108,11 @@ class Window(formType, baseType):
 
 
     def stop_run_file(self):
+        # 终止线程的事件循环
         global_var.set_value('start_flag',False)
-        self.thread.quit()  # 终止线程的事件循环
-        self.thread_running = False  # 标记线程停止
+        self.thread.quit()
+        # 标记线程停止
+        self.thread_running = global_var.get_value('start_flag')