diff --git a/packages/demo/src/preview.js b/packages/demo/src/preview.js
index 3ed2c2eca..a7d32c15e 100644
--- a/packages/demo/src/preview.js
+++ b/packages/demo/src/preview.js
@@ -1,17 +1,17 @@
-import { run, Boot } from '@ali/lowcode-runtime';
+import { boot, run } from '@ali/lowcode-runtime';
 import Renderer from '@ali/lowcode-react-renderer';
 import FusionLoading from './preview/plugins/loading/fusion';
 import BasicLayout from './preview/layouts/BasicLayout';
 import provider from './preview/plugins/provider';
 
 // 注册渲染模块
-Boot.registerRenderer(Renderer);
+boot.registerRenderer(Renderer);
 
 // 注册布局组件，可注册多个
-Boot.registerLayout('BasicLayout', BasicLayout);
+boot.registerLayout('BasicLayout', BasicLayout);
 
-// 注册页面 loading
-Boot.registerLoading(FusionLoading);
+// 注册页面 Loading
+boot.registerLoading(FusionLoading);
 
 const appProvider = provider.create('lowcode_demo'); // 入参为应用唯一标识
 
diff --git a/packages/demo/src/preview/plugins/provider.ts b/packages/demo/src/preview/plugins/provider.ts
index d654af45e..fc56ece03 100644
--- a/packages/demo/src/preview/plugins/provider.ts
+++ b/packages/demo/src/preview/plugins/provider.ts
@@ -1,5 +1,5 @@
 import { createElement } from 'react';
-import { Provider, Boot, Router, navigator } from '@ali/lowcode-runtime';
+import { Provider, boot, Router } from '@ali/lowcode-runtime';
 import appConfig from '../config/app';
 import builtInComps from '../config/components';
 import componentsMap from '../config/componentsMap';
@@ -94,16 +94,13 @@ class PreviewProvider extends Provider {
       return App;
     }
     const { componentName: layoutName, props: layoutProps } = this.layout as any;
-    const Layout = Boot.getLayout(layoutName);
+    const Layout = boot.getLayout(layoutName);
     if (Layout) {
       App = (props: any) =>
         createElement(
           Layout,
           {
             ...layoutProps,
-            onNavChange: ({ selectedKey }: any) => {
-              navigator.goto(`/${selectedKey}`);
-            },
           },
           RouterView({ props }),
         );
diff --git a/packages/runtime/src/index.ts b/packages/runtime/src/index.ts
index 37abfe968..dc637c4be 100644
--- a/packages/runtime/src/index.ts
+++ b/packages/runtime/src/index.ts
@@ -1,5 +1,5 @@
 import { navigator, Router, runApp as run } from '@ali/recore';
-import Boot from './boot';
+import boot from './boot';
 import Provider from './provider';
 
-export { run, Router, Boot, Provider, navigator };
+export { run, Router, boot, Provider, navigator };
diff --git a/packages/runtime/src/lazyComponent.tsx b/packages/runtime/src/lazyComponent.tsx
index b75bf8162..18a582241 100644
--- a/packages/runtime/src/lazyComponent.tsx
+++ b/packages/runtime/src/lazyComponent.tsx
@@ -1,5 +1,5 @@
 import { Component, createElement } from 'react';
-import Boot from './boot';
+import boot from './boot';
 
 interface IProps {
   getPageData: () => any;
@@ -29,8 +29,8 @@ export default class LazyComponent extends Component<IProps, IState> {
   render() {
     const { getPageData, ...restProps } = this.props;
     const { schema } = this.state;
-    const Renderer = Boot.getRenderer();
-    const Loading = Boot.getLoading();
+    const Renderer = boot.getRenderer();
+    const Loading = boot.getLoading();
     if (!Renderer || !schema) {
       if (!Loading) {
         return null;