diff --git a/aio/tools/translator/translate.spec.ts b/aio/tools/translator/translate.spec.ts
index 6d6ee29d60..14913e464c 100644
--- a/aio/tools/translator/translate.spec.ts
+++ b/aio/tools/translator/translate.spec.ts
@@ -1,6 +1,6 @@
 import { expect } from 'chai';
 import { dirs } from './dirs';
-import { kernelText, lookup, translate } from './translate';
+import { kernelText, lookup, translateDirectory, translateFile } from './translate';
 
 
 describe('根据字典进行翻译', () => {
@@ -12,10 +12,11 @@ describe('根据字典进行翻译', () => {
     expect(lookup('# Forms')[0].translation).eql('# 表单');
   });
 
-  it('自动根据字典翻译单个文件', function () {
-    const fs = require('fs');
-    const content = fs.readFileSync(__dirname + '/../../../../content-en/' + 'guide/forms.md', 'utf-8');
-    const result = translate(content);
-    fs.writeFileSync(dirs.content + 'guide/forms.md', result.join('\n\n'), 'utf-8');
+  it('自动根据字典翻译单个文件（测试）', function () {
+    translateFile(__dirname + '/../../../../content-en/' + 'guide/forms.md', dirs.content + 'guide/forms.md');
+  });
+
+  it('自动根据字典翻译所有文件（非测试）', function () {
+    translateDirectory(__dirname + '/../../../../content-en/', dirs.content);
   });
 });
diff --git a/aio/tools/translator/translate.ts b/aio/tools/translator/translate.ts
index ad04d1c891..bdeda57b56 100644
--- a/aio/tools/translator/translate.ts
+++ b/aio/tools/translator/translate.ts
@@ -1,5 +1,8 @@
+import * as fs from 'fs';
 import * as _ from 'lodash';
 import { DictEntry } from './dict-entry';
+import { dirs } from './dirs';
+import { listMarkdownFiles } from './extractor';
 import { indentOf, normalizeLines, repeat } from './utils';
 
 export const dict = require('./dict-3.json') as DictEntry[];
@@ -35,3 +38,16 @@ export function translate(content: string): string[] {
       }
     });
 }
+
+export function translateFile(sourceFile: string, targetFile: string): void {
+  const content = fs.readFileSync(sourceFile, 'utf-8');
+  const result = translate(content);
+  fs.writeFileSync(targetFile, result.join('\n\n'), 'utf-8');
+}
+
+export function translateDirectory(sourceDir: string, targetDir: string): void {
+  const files = listMarkdownFiles(sourceDir);
+  files.forEach(fileName => {
+    translateFile(fileName, fileName.replace(/^.*content-en\//, dirs.content));
+  });
+}