diff --git a/arkui/ace_engine/native/native_node.h b/arkui/ace_engine/native/native_node.h
index 4bdcc29761cddbdc4b9b869b8e36d4e345998690..c182d4e46446a385398a3f375da699b23db86b10 100644
--- a/arkui/ace_engine/native/native_node.h
+++ b/arkui/ace_engine/native/native_node.h
@@ -4496,6 +4496,19 @@ typedef enum {
      */
     NODE_SCROLL_FLING,
 
+    /**
+     * @brief Obtains the total size of all child components when fully expanded in the scrollable component.
+     *
+     * Format of the return value {@link ArkUI_AttributeItem}:\n
+     * .value[0].f32: total width of all child components when fully expanded in the scrollable component.
+     *                The default unit is vp. \n
+     * .value[1].f32: total height of all child components when fully expanded in the scrollable component.
+     *                The default unit is vp. \n
+     *
+     * @since 14
+     */
+    NODE_SCROLL_SIZE,
+
     /**
      * @brief Defines the direction in which the list items are arranged. This attribute can be set, reset, and
      * obtained as required through APIs.