diff --git a/docs/README.md b/docs/README.md
index 8e293e50..8dda6acd 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -89,6 +89,14 @@ Code in `404.html`
 </nav>
 ```
 
+### Hash router
+`404.html` is not SEO friendly, you can replace it use `index.html` and `data-router` [issue#7](https://github.com/QingWei-Li/docsify/issues/7)
+
+index.html
+
+```html
+<script src="//unpkg.com/docsify" data-router></script>
+```
 
 ### CDN
 - UNPKG [https://unpkg.com/docsify/](https://unpkg.com/docsify/)
diff --git a/docs/zh-cn.md b/docs/zh-cn.md
index 745440a6..7897cb14 100644
--- a/docs/zh-cn.md
+++ b/docs/zh-cn.md
@@ -94,6 +94,15 @@ docsify serve docs
 </nav>
 ```
 
+### Hash router
+`404.html` 对 SEO 不友好, 你可以用 `index.html` 代替并开启 `hash router` 功能。 [issue#7](https://github.com/QingWei-Li/docsify/issues/7)
+
+index.html
+
+```html
+<script src="//unpkg.com/docsify" data-router></script>
+```
+
 
 ### CDN
 - UNPKG [https://unpkg.com/docsify/](https://unpkg.com/docsify/)