diff --git a/src/core/element/index.js b/src/core/element/index.js
index 070afb0f3..da27b0719 100644
--- a/src/core/element/index.js
+++ b/src/core/element/index.js
@@ -1,8 +1,7 @@
 import { Element } from "./element";
 import { isString, isWidget } from "../2.base";
 
-BI.Element = Element;
-BI.Element.renderEngine = {
+Element.renderEngine = {
     createElement: widget => {
         if (isWidget(widget)) {
             const o = widget.options;
@@ -30,3 +29,5 @@ BI.Element.renderEngine = {
         return new Element();
     },
 };
+
+export { Element };
diff --git a/src/core/index.js b/src/core/index.js
index a492a0d96..49d7b2125 100644
--- a/src/core/index.js
+++ b/src/core/index.js
@@ -14,6 +14,7 @@ import { ShowListener } from "./listener/listener.show";
 import { useInWorker } from "./worker";
 import * as constant from "./constant";
 import * as logic from "./logic";
+import { Element } from "./element";
 
 export * from "./decorator";
 export * from "./2.base";
@@ -33,7 +34,8 @@ export {
     StyleLoaderManager,
     ShowListener,
     Plugin,
-    useInWorker
+    useInWorker,
+    Element
 };
 
 Object.assign(BI, {
@@ -47,6 +49,7 @@ Object.assign(BI, {
     component: inject.shortcut,
     ...action,
     ...controllers,
+    Element,
     ...func,
     StyleLoaderManager,
     ShowListener,