diff --git a/designer-base/src/main/java/com/fr/design/mainframe/toast/SimpleToast.java b/designer-base/src/main/java/com/fr/design/mainframe/toast/SimpleToast.java
index b3b49a09fb..f74de6dd99 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/toast/SimpleToast.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/toast/SimpleToast.java
@@ -27,8 +27,8 @@ public class SimpleToast extends UIDialog {
     private static final TimeUnit DEFAULT_TIME_UNIT = TimeUnit.MILLISECONDS;
 
 
-    private ScheduledExecutorService TIMER;
-    private int hide_height = 0;
+    private ScheduledExecutorService timer;
+    private int hideHeight = 0;
     private JPanel contentPane;
     private boolean show = false;
     private Window parent;
@@ -72,7 +72,7 @@ public class SimpleToast extends UIDialog {
         this.getContentPane().setLayout(null);
         this.getContentPane().add(contentPane);
         Dimension dimension = calculatePreferSize();
-        hide_height = dimension.height;
+        hideHeight = dimension.height;
         setSize(new Dimension(dimension.width, 0));
         contentPane.setSize(dimension);
         setRelativeLocation(dimension);
@@ -94,19 +94,19 @@ public class SimpleToast extends UIDialog {
     }
 
 
-    public void display(JPanel outerJPanel) {
+    public void display(JPanel outerPanel) {
         show = true;
-        outerJPanel.setLocation(0, -hide_height);
-        ScheduledExecutorService TIP_TOOL_TIMER = createToastScheduleExecutorService();
-        TIP_TOOL_TIMER.scheduleAtFixedRate(new Runnable() {
+        outerPanel.setLocation(0, -hideHeight);
+        ScheduledExecutorService tipToolTimer = createToastScheduleExecutorService();
+        tipToolTimer.scheduleAtFixedRate(new Runnable() {
             @Override
             public void run() {
-                Point point = outerJPanel.getLocation();
-                if (point.y >= 0) {
-                    TIP_TOOL_TIMER.shutdown();
+                Point point = outerPanel.getLocation();
+                if (point.y >= 0 && !tipToolTimer.isShutdown()) {
+                    tipToolTimer.shutdown();
                 }
                 int showDistance = 5 + point.y < 0 ? 5 : -point.y;
-                outerJPanel.setLocation(point.x, point.y + showDistance);
+                outerPanel.setLocation(point.x, point.y + showDistance);
                 Dimension dimension = SimpleToast.this.getSize();
                 SimpleToast.this.setSize(new Dimension(dimension.width, dimension.height + showDistance));
             }
@@ -115,8 +115,8 @@ public class SimpleToast extends UIDialog {
     }
 
     private void disappear(JPanel outerJPanel, long delay, TimeUnit timeUnit) {
-        TIMER = createToastScheduleExecutorService();
-        TIMER.schedule(new DisappearMotion(outerJPanel), delay, timeUnit);
+        timer = createToastScheduleExecutorService();
+        timer.schedule(new DisappearMotion(outerJPanel), delay, timeUnit);
     }
 
     /**
@@ -131,13 +131,13 @@ public class SimpleToast extends UIDialog {
 
         @Override
         public void run() {
-            ScheduledExecutorService TIP_TOOL_TIMER = createToastScheduleExecutorService();
-            TIP_TOOL_TIMER.scheduleAtFixedRate(new Runnable() {
+            ScheduledExecutorService tipToolTimer = createToastScheduleExecutorService();
+            tipToolTimer.scheduleAtFixedRate(new Runnable() {
                 @Override
                 public void run() {
                     Point point = panel.getLocation();
-                    if (point.y <= -hide_height) {
-                        TIP_TOOL_TIMER.shutdown();
+                    if (point.y <= -hideHeight && !tipToolTimer.isShutdown()) {
+                        tipToolTimer.shutdown();
                         SimpleToast.this.setVisible(false);
                         SimpleToast.this.dispose();
                         SimpleToast.this.show = false;
@@ -151,8 +151,8 @@ public class SimpleToast extends UIDialog {
     }
 
 
-    private void disappear(JPanel outerJPanel) {
-        disappear(outerJPanel, DEFAULT_DISAPPEAR_DELAY, DEFAULT_TIME_UNIT);
+    private void disappear(JPanel outerPanel) {
+        disappear(outerPanel, DEFAULT_DISAPPEAR_DELAY, DEFAULT_TIME_UNIT);
     }
 
     private ScheduledExecutorService createToastScheduleExecutorService() {