diff --git a/CustomDialogPractice/entry/src/main/ets/pages/GlobalDialogDecoupledFromThePage.ets b/CustomDialogPractice/entry/src/main/ets/pages/GlobalDialogDecoupledFromThePage.ets
index 7736b1b52722e3e0e54087074e2202f052eb41d4..a1d2190cf714b006f8dd591186371b6ff1835dad 100644
--- a/CustomDialogPractice/entry/src/main/ets/pages/GlobalDialogDecoupledFromThePage.ets
+++ b/CustomDialogPractice/entry/src/main/ets/pages/GlobalDialogDecoupledFromThePage.ets
@@ -77,6 +77,12 @@ export struct GlobalDialogDecoupledFromThePage {
     PromptActionClass.setOptions({ alignment: DialogAlignment.Center, maskColor: 'rgba(0, 0, 0, 0.2)' });
   }
 
+  aboutToDisappear(): void {
+    if (PromptActionClass.contentNode !== null) {
+      PromptActionClass.contentNode.dispose(); // release contentNode.
+    }
+  }
+
   build() {
     NavDestination() {
       Column() {