diff --git a/interfaces/innerkits/wm/window.h b/interfaces/innerkits/wm/window.h
index c2864c831f..1f45094e78 100644
--- a/interfaces/innerkits/wm/window.h
+++ b/interfaces/innerkits/wm/window.h
@@ -2418,7 +2418,7 @@ public:
     virtual void NotifyExtensionEventAsync(uint32_t notifyEvent) {}
 
     /**
-     * @brief Get isUIExtFirstSubWindow flag
+     * @brief Get whether this window is the first level sub window of UIExtension.
      *
      * @return true - is the first sub window of UIExtension, false - is not the first sub window of UIExtension
      */
diff --git a/interfaces/innerkits/wm/window_option.h b/interfaces/innerkits/wm/window_option.h
index 9cb5964861..4cda3d7599 100644
--- a/interfaces/innerkits/wm/window_option.h
+++ b/interfaces/innerkits/wm/window_option.h
@@ -231,7 +231,7 @@ public:
     void SetOnlySupportSceneBoard(bool onlySupportSceneBoard);
 
     /**
-     * @brief Set whether this window is the first sub window of UIExtension.
+     * @brief Set whether this window is the first level sub window of UIExtension.
      *
      * @param isUIExtFirstSubWindow whether is the first sub window of UIExtension.
      */
@@ -427,7 +427,7 @@ public:
     bool GetOnlySupportSceneBoard() const;
 
     /**
-     * @brief Get isUIExtFirstSubWindow flag
+     * @brief Get whether this window is the first level sub window of UIExtension.
      *
      * @return true - is the first sub window of UIExtension, false - is not the first sub window of UIExtension
      */
diff --git a/wm/src/window_scene_session_impl.cpp b/wm/src/window_scene_session_impl.cpp
index faf65aa31d..9c5c5dcb74 100644
--- a/wm/src/window_scene_session_impl.cpp
+++ b/wm/src/window_scene_session_impl.cpp
@@ -1343,7 +1343,7 @@ WMError WindowSceneSessionImpl::DestroyInner(bool needNotifyServer)
         if (WindowHelper::IsSystemWindow(GetType())) {
             // main window no need to notify host, since host knows hide first
             ret = SyncDestroyAndDisconnectSpecificSession(property_->GetPersistentId());
-        } else if (WindowHelper::IsSubWindow(GetType()) && property_->GetIsUIExtFirstSubWindow()) {
+        } else if (WindowHelper::IsSubWindow(GetType()) && !property_->GetIsUIExtFirstSubWindow()) {
             auto parentSession = FindParentSessionByParentId(GetParentId());
             if (parentSession == nullptr || parentSession->GetHostSession() == nullptr) {
                 return WMError::WM_ERROR_NULLPTR;