diff --git a/error.md b/error.md
index b8f4ac699faa82a08c3476f368e6c1b0af28627c..0274054c8846b52dcdee410fd012bc7edbff2617 100644
--- a/error.md
+++ b/error.md
@@ -65,3 +65,16 @@ As Homebrew does not drop privileges on installation you would be giving all
 /bin/zsh -c "$(curl -fsSL https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh)"
 
 ```
+
+**11.** 如果遇到 SSL certificate problem: certificate has expired 错误
+ **具体内容如下：** 
+Cloning into '/usr/local/Homebrew'...
+fatal: unable to access 'https://mirrors.ustc.edu.cn/brew.git/': SSL certificate problem: certificate has expired
+m此步骤失败 '尝试再次运行自动脚本选择其他下载源或者切换网络'
+ **问题分析：** 
+该部分原因可能因为在此之前 安装过Git客户端 默认Git客户端安装是开启SSL证书验证功能 需要在终端中关闭该验证
+ **解决办法** 
+前面都不是重点，重点是问题描述里面的最后一句 certificate problem: certificate has expired，意思是证书过期了。其实就是SSL卡住了你，因此最快的解决方法就是关掉SSL验证。
+```
+git config --global http.sslVerify false
+```