diff --git a/how_to_use_pull_requests.md b/how_to_use_pull_requests.md
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+++ b/how_to_use_pull_requests.md
@@ -1,3 +1,31 @@
 # 就是个教程
 
-不会的看一下，会的忽略就完事了。
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+不会的看一下，会的忽略就完事了。
+
+首先将该仓库 `fork` 到自己的仓库
+
+![](./img/fork.png)
+
+
+然后在你的仓库中修改该分支
+
+`git clone https://github.com/your_user_name/awesome-ouc-cs.git`
+
+按照 project 的格式加入自己开源项目的索引后提交
+
+```
+git add *
+git commit -m "some useful message"
+git push
+```
+
+在 `Pull requests` 的页面发起 PR
+
+![](./img/pull_request.png) 
+
+提交后就可以在主项目的 `Pull requests` 里看到自己发起的 PR，之后等待仓库所有者合并即可。
+
+## 参考链接
+
+[Pull Request 的命令行管理](http://www.ruanyifeng.com/blog/2017/07/pull_request.html)
+[官方文档](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/about-pull-requests)
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