diff --git a/docs/_sidebar.md b/docs/_sidebar.md
index 96f2071..65b8f9a 100644
--- a/docs/_sidebar.md
+++ b/docs/_sidebar.md
@@ -1,9 +1,10 @@
 - Getting started
   - [Quick Start](getting-started.md)
 - Customization
-  - [Request](request.md)
   - [Configuration](configuration.md)
   - [API Configuration](API-configuration.md)
+  - [I18n](i18n.md)
+  - [Request](request.md)
 - Guide
   - [Deploy](deploy.md)
 - [Change Log](change-log.md)
diff --git a/docs/i18n.md b/docs/i18n.md
new file mode 100644
index 0000000..1bfedd8
--- /dev/null
+++ b/docs/i18n.md
@@ -0,0 +1,73 @@
+# globalization
+
+## Add language
+
+Take Japanese as an example.
+
+1. Add a language pack local file, `ja` is the Japanese language code, and a list of languages ​​that support translation [有道智云](http://ai.youdao.com/docs/doc-trans-api.s#p05), the `src/locales/ja/messages.json` file will be generated after running the following command.
+
+   ```bash 
+   npm run add-locale ja
+   ```
+
+2. Extract the fields in the code that need to be translated, ie `<Trans>?message</Trans>`, `` i18n.t`message `` in the `message` field, run the following command after `src/locales/ja /messages.json` will appear after the extracted field configuration.
+
+   ```bash 
+   npm run extract
+   ```
+
+   You will see the following information:
+
+   ```bash
+   Catalog statistics:
+   ┌─────────────┬─────────────┬─────────┐
+   │ Language    │ Total count │ Missing │
+   ├─────────────┼─────────────┼─────────┤
+   │ en (source) │     52      │    -    │
+   │ ja          │     52      │   52    │
+   │ zh          │     52      │    0    │
+   └─────────────┴─────────────┴─────────┘
+   ```
+
+3. At the same time, we have added the relevant configuration in `src/utils/config.js`.
+
+   ```javascript
+   {
+       ...
+       i18n: {
+           languages: [
+               ...
+               {
+                   key:'ja',
+                   title: '日语',
+                   flag: '/japanese.svg',
+               },
+           ],
+       },
+   }
+   ```
+
+   > Routing related effects, after the configuration `npm run start` takes effect after restart.
+
+4. Use the built-in commands for automatic translation. You will see the translated configuration in `src/locales/ja/messages.json`.
+
+   ```bash
+   npm run trans:only
+   ```
+
+   You will see the following information:
+
+   ```bash
+   start: en -> ja
+   ...
+   youdao: en -> ja: Unpublished -> 未発表
+   youdao: en -> ja: Update -> 更新
+   youdao: en -> ja: Update User -> ユーザーの更新
+   youdao: en -> ja: Username -> 名
+   ...
+   All translations have been completed.
+   ```
+
+   > `npm run trans` will execute `npm run extract` and `npm run trans:only` in order.
+
+5. Finally, you can adjust the inaccurate fields in `src/locales/ja/messages.json`. Start the development mode `npm run start`, open [http://localhost:7000/ja/login](http://localhost:7000/ja/login) and you will see the Japanese version of the app.
diff --git a/docs/zh-cn/_sidebar.md b/docs/zh-cn/_sidebar.md
index c8efceb..b42c711 100644
--- a/docs/zh-cn/_sidebar.md
+++ b/docs/zh-cn/_sidebar.md
@@ -1,9 +1,10 @@
 - 入门
   - [快速上手](zh-cn/getting-started.md)
 - 定制化
-  - [http请求](zh-cn/request.md)
   - [配置项](zh-cn/configuration.md)
   - [接口配置](zh-cn/API-configuration.md)
+  - [国际化](zh-cn/i18n.md)
+  - [http 请求](zh-cn/request.md)
 - 指南
   - [部署](zh-cn/deploy.md)
 - [更新日志](zh-cn/change-log.md)
diff --git a/docs/zh-cn/i18n.md b/docs/zh-cn/i18n.md
new file mode 100644
index 0000000..a68ae78
--- /dev/null
+++ b/docs/zh-cn/i18n.md
@@ -0,0 +1,73 @@
+# 国际化
+
+## 新增应用语言
+
+以新增日语为例。
+
+1. 添加语言包本地文件，`ja` 为日语的语言代码，支持翻译的语言列表参考 [有道智云](http://ai.youdao.com/docs/doc-trans-api.s#p05)，运行下面命令后会生成 `src/locales/ja/messages.json` 文件。
+
+   ```bash
+   npm run add-locale ja
+   ```
+
+2. 提取代码中需要翻译的字段，即 `<Trans>message</Trans>`、`` i18n.t`message `` 中 `message` 字段，运行下面命令后 `src/locales/ja/messages.json` 将会出现提取后的字段配置。
+
+   ```bash
+   npm run extract
+   ```
+
+   你将看到如下信息：
+
+   ```bash
+    Catalog statistics:
+    ┌─────────────┬─────────────┬─────────┐
+    │ Language    │ Total count │ Missing │
+    ├─────────────┼─────────────┼─────────┤
+    │ en (source) │     52      │    -    │
+    │ ja          │     52      │   52    │
+    │ zh          │     52      │    0    │
+    └─────────────┴─────────────┴─────────┘
+   ```
+
+3. 与此同时，我们在 `src/utils/config.js` 新增相关配置。
+
+   ```javascript
+   {
+       ...
+       i18n: {
+           languages: [
+               ...
+               {
+                   key:'ja',
+                   title: '日语',
+                   flag: '/japanese.svg',
+               },
+           ],
+       },
+   }
+   ```
+
+   >  路由相关效果，配置后 `npm run start` 重启后生效。
+
+4. 使用内置的命令进行自动翻译，在 `src/locales/ja/messages.json` 中将会看到翻译后的配置。
+
+   ```bash
+   npm run trans:only
+   ```
+
+   你将看到如下信息：
+
+   ```bash
+   start: en -> ja
+   ...
+   youdao: en -> ja: Unpublished -> 未発表
+   youdao: en -> ja: Update -> 更新
+   youdao: en -> ja: Update User -> ユーザーの更新
+   youdao: en -> ja: Username -> 名
+   ...
+   All translations have been completed.
+   ```
+
+   > `npm run trans` 将会依次执行 `npm run extract` 和 `npm run trans:only`
+
+5. 最后，可以在 `src/locales/ja/messages.json` 中对翻译不准确的的字段进行调整。启动开发模式 `npm run start`，打开 [http://localhost:7000/ja/login](http://localhost:7000/ja/login)，你将看到日语版本的应用。