diff --git a/designer-base/src/main/java/com/fr/design/mainframe/WestRegionContainerPane.java b/designer-base/src/main/java/com/fr/design/mainframe/WestRegionContainerPane.java
index 5c17d8f1a4..23c642dbd4 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/WestRegionContainerPane.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/WestRegionContainerPane.java
@@ -39,8 +39,12 @@ public class WestRegionContainerPane extends UIResizableContainer {
         
             @Override
             public void on(PluginEvent event) {
-            
-                setDownPane(TableDataTreePane.getInstance(DesignModelAdapter.getCurrentModelAdapter()));
+
+                if (getDownPane() != null) {
+                    replaceDownPane(TableDataTreePane.getInstance(DesignModelAdapter.getCurrentModelAdapter()));
+                } else {
+                    setDownPane(TableDataTreePane.getInstance(DesignModelAdapter.getCurrentModelAdapter()));
+                }
             }
         }, new PluginFilter() {