diff --git a/docs/.vitepress/config.ts b/docs/.vitepress/config.ts
index 40622dfc80cb..3fb66bce6908 100644
--- a/docs/.vitepress/config.ts
+++ b/docs/.vitepress/config.ts
@@ -21,6 +21,17 @@ export default withPwa(defineConfig({
   lang: 'en-US',
   title: vitestName,
   description: vitestDescription,
+  locales: {
+    root: {
+      label: 'English',
+      lang: 'en',
+    },
+    en: {
+      label: '简体中文',
+      lang: 'zh',
+      link: 'https://cn.vitest.dev/',
+    },
+  },
   head: [
     ['meta', { name: 'theme-color', content: '#729b1a' }],
     ['link', { rel: 'icon', href: '/logo.svg', type: 'image/svg+xml' }],