1、設置代理服務器： Proxy ->macOS Proxy
報錯：
1、Charles cannot configure your proxy settings while it is on a read-only volume. Perhaps you are running Charles from the disk image? If so, please copy Charles to the Applications folder and run it again. Otherwise please ensure that Charles is running on a volume that is read-write and try again.
解決方法：
在終端中輸入如下命令即可
sudo chown -R root "/Applications/Charles.app/Contents/Resources"
sudo chmod -R u+s "/Applications/Charles.app/Contents/Resources"