diff --git a/.dumi/theme/builtins/Previewer/CodeBlockButton.tsx b/.dumi/theme/builtins/Previewer/CodeBlockButton.tsx
index 1c50a538cc..5c5828ad37 100644
--- a/.dumi/theme/builtins/Previewer/CodeBlockButton.tsx
+++ b/.dumi/theme/builtins/Previewer/CodeBlockButton.tsx
@@ -6,6 +6,12 @@ import { ping } from '../../utils';
 
 let pingDeferrer: PromiseLike<boolean>;
 
+const codeBlockJs =
+  'https://renderoffice.a' +
+  'lipay' +
+  'objects.com/p' +
+  '/yuyan/180020010001206410/parseFileData.js';
+
 function useShowCodeBlockButton() {
   const [showCodeBlockButton, setShowCodeBlockButton] = useState(false);
 
@@ -13,6 +19,12 @@ function useShowCodeBlockButton() {
     pingDeferrer ??= new Promise<boolean>((resolve) => {
       ping((status) => {
         if (status !== 'timeout' && status !== 'error') {
+          // Async insert `codeBlockJs` into body end
+          const script = document.createElement('script');
+          script.src = codeBlockJs;
+          script.async = true;
+          document.body.appendChild(script);
+
           return resolve(true);
         }
 
diff --git a/.dumirc.ts b/.dumirc.ts
index e0098081af..57672e5d8e 100644
--- a/.dumirc.ts
+++ b/.dumirc.ts
@@ -7,12 +7,6 @@ import rehypeAntd from './.dumi/rehypeAntd';
 import remarkAntd from './.dumi/remarkAntd';
 import { version } from './package.json';
 
-const codeBlockJs =
-  'https://renderoffice.a' +
-  'lipay' +
-  'objects.com/p' +
-  '/yuyan/180020010001206410/parseFileData.js';
-
 export default defineConfig({
   plugins: ['dumi-plugin-color-chunk'],
 
@@ -189,7 +183,6 @@ export default defineConfig({
       document.documentElement.className += isZhCN(pathname) ? 'zh-cn' : 'en-us';
     })();
     `,
-    codeBlockJs,
   ],
   scripts: [
     {