diff --git a/packages/designer/src/document/node/node.ts b/packages/designer/src/document/node/node.ts
index 6239cfa60..96b810f1d 100644
--- a/packages/designer/src/document/node/node.ts
+++ b/packages/designer/src/document/node/node.ts
@@ -419,6 +419,13 @@ export class Node<Schema extends NodeSchema = NodeSchema> {
     return this.parent.children.indexOf(this);
   }
 
+  /**
+   * alias index
+   */
+  getIndex = () => {
+    return this.index;
+  };
+
   /**
    * 获取下一个兄弟节点
    */