diff --git a/packages/shell/src/document-model.ts b/packages/shell/src/document-model.ts
index 100d2c33b..741eb08f9 100644
--- a/packages/shell/src/document-model.ts
+++ b/packages/shell/src/document-model.ts
@@ -186,6 +186,15 @@ export default class DocumentModel {
     this[documentSymbol].removeNode(idOrNode as any);
   }
 
+  /**
+   * componentsMap of documentModel
+   * @param extraComps
+   * @returns
+   */
+  getComponentsMap(extraComps?: string[]) {
+    return this[documentSymbol].getComponentsMap(extraComps);
+  }
+
   /**
    * 当前 document 新增节点事件
    */