diff --git a/Assets/Scripts/UI/UIInstruction.cs b/Assets/Scripts/UI/UIInstruction.cs
index 84ba68df..2339eea9 100644
--- a/Assets/Scripts/UI/UIInstruction.cs
+++ b/Assets/Scripts/UI/UIInstruction.cs
@@ -92,6 +92,7 @@ namespace QFramework.Example
         protected override void OnHide()
         {
             mData = null;
+            StringEventSystem.Global.Send(this.GetType().Name + "Hide");
         }
 
         protected override void OnClose()