1.打开IP查询网页
2.查询下列域名对应的IP地址
github.com
gist.github.com
assets-cdn.github.com
raw.githubusercontent.com
gist.githubusercontent.com
cloud.githubusercontent.com
camo.githubusercontent.com
avatars0.githubusercontent.com
avatars1.githubusercontent.com
avatars2.githubusercontent.com
avatars3.githubusercontent.com
avatars4.githubusercontent.com
avatars5.githubusercontent.com
avatars6.githubusercontent.com
avatars7.githubusercontent.com
avatars8.githubusercontent.com
查询域名IP
例如查询后的结果是：
140.82.114.3 github.com
140.82.112.3 gist.github.com
185.199.109.153 assets-cdn.github.com
199.232.28.133 raw.githubusercontent.com
199.232.28.133 gist.githubusercontent.com
199.232.28.133 cloud.githubusercontent.com
199.232.28.133 camo.githubusercontent.com
199.232.28.133 avatars0.githubusercontent.com
199.232.28.133 avatars1.githubusercontent.com
199.232.28.133 avatars2.githubusercontent.com
199.232.28.133 avatars3.githubusercontent.com
199.232.28.133 avatars4.githubusercontent.com
199.232.28.133 avatars5.githubusercontent.com
199.232.28.133 avatars6.githubusercontent.com
199.232.28.133 avatars7.githubusercontent.com
199.232.28.133 avatars8.githubusercontent.com
3.打开Mac终端
1.输入命令sudo vi /etc/hosts
2.输入电脑密码后，点击i键，进入Insert模式，将上面的查询结果拷贝进去
例如：
# GitHub Start
140.82.114.3 github.com #（ip地址偶尔会变）
140.82.112.3 gist.github.com #（ip地址偶尔会变）
185.199.109.153 assets-cdn.github.com #（ip地址偶尔会变）
199.232.28.133 raw.githubusercontent.com
199.232.28.133 gist.githubusercontent.com
199.232.28.133 cloud.githubusercontent.com
199.232.28.133 camo.githubusercontent.com
199.232.28.133 avatars0.githubusercontent.com
199.232.28.133 avatars1.githubusercontent.com
199.232.28.133 avatars2.githubusercontent.com
199.232.28.133 avatars3.githubusercontent.com
199.232.28.133 avatars4.githubusercontent.com
199.232.28.133 avatars5.githubusercontent.com
199.232.28.133 avatars6.githubusercontent.com
199.232.28.133 avatars7.githubusercontent.com
199.232.28.133 avatars8.githubusercontent.com
# GitHub End
3.点击esc 键，然后输入:wq保存退出即可。
4.重新打开或刷新Github页面，页面或图片就可以加载出来了。
