diff --git a/.env b/.env
new file mode 100644
index 0000000..f7627f5
--- /dev/null
+++ b/.env
@@ -0,0 +1 @@
+LANG=zh
diff --git a/docusaurus.config.js b/docusaurus.config.js
index 6cf2af6..e07aa77 100644
--- a/docusaurus.config.js
+++ b/docusaurus.config.js
@@ -3,6 +3,9 @@
 
 const lightCodeTheme = require("prism-react-renderer/themes/github");
 const darkCodeTheme = require("prism-react-renderer/themes/dracula");
+const dotenv = require("dotenv");
+
+dotenv.config();
 
 /** @type {import('@docusaurus/types').Config} */
 const config = {
@@ -22,7 +25,7 @@ const config = {
       /** @type {import('@docusaurus/preset-classic').Options} */
       ({
         docs: {
-          path: "docs/zh",
+          path: `docs/${process.env.LANG}`,
           sidebarPath: require.resolve("./sidebars.js"),
           // Please change this to your repo.
           editUrl: "https://github.com/shhdgit/clinic-docs/blob/main",
diff --git a/package.json b/package.json
index 382fa1a..53accb5 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
   "devDependencies": {
     "@docusaurus/module-type-aliases": "2.0.0-beta.17",
     "@tsconfig/docusaurus": "^1.0.4",
+    "dotenv": "^16.0.0",
     "sass": "^1.49.9",
     "sass-loader": "^12.6.0",
     "typescript": "^4.6.2"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index aa9945a..a4f8a33 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -8,6 +8,7 @@ specifiers:
   '@tsconfig/docusaurus': ^1.0.4
   clsx: ^1.1.1
   docusaurus-plugin-sass: ^0.2.2
+  dotenv: ^16.0.0
   prism-react-renderer: ^1.2.1
   react: ^17.0.1
   react-dom: ^17.0.1
@@ -28,6 +29,7 @@ dependencies:
 devDependencies:
   '@docusaurus/module-type-aliases': registry.npmmirror.com/@docusaurus/module-type-aliases/2.0.0-beta.17_react-dom@17.0.2+react@17.0.2
   '@tsconfig/docusaurus': registry.npmmirror.com/@tsconfig/docusaurus/1.0.5
+  dotenv: registry.npmmirror.com/dotenv/16.0.0
   sass: registry.npmmirror.com/sass/1.49.9
   sass-loader: registry.npmmirror.com/sass-loader/12.6.0_sass@1.49.9
   typescript: registry.npmmirror.com/typescript/4.6.2
@@ -4980,6 +4982,13 @@ packages:
       is-obj: registry.npmmirror.com/is-obj/2.0.0
     dev: false
 
+  registry.npmmirror.com/dotenv/16.0.0:
+    resolution: {integrity: sha512-qD9WU0MPM4SWLPJy/r2Be+2WgQj8plChsyrCNQzW/0WjvcJQiKQJ9mH3ZgB3fxbUUxgc/11ZJ0Fi5KiimWGz2Q==, registry: https://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/dotenv/-/dotenv-16.0.0.tgz}
+    name: dotenv
+    version: 16.0.0
+    engines: {node: '>=12'}
+    dev: true
+
   registry.npmmirror.com/duplexer/0.1.2:
     resolution: {integrity: sha512-jtD6YG370ZCIi/9GTaJKQxWTZD045+4R4hTk/x1UyoqadyJ9x9CgSi1RlVDQF8U2sxLLSnFkCaMihqljHIWgMg==, registry: https://registry.npm.taobao.org/, tarball: https://registry.npmmirror.com/duplexer/-/duplexer-0.1.2.tgz}
     name: duplexer