1.查看npm仓库地址：npm config get registry
2.修改地址：npm config set registry https://registry.npm.taobao.org

C:\Users\Kingo>npm config get registry
https://registry.npmjs.org/

C:\Users\Kingo>npm config set registry https://registry.npm.taobao.org

C:\Users\Kingo>npm config get registry
https://registry.npm.taobao.org/