1.通过config命令
npm config set registry https://registry.npm.taobao.org
npm info underscore （如果上面配置正确这个命令会有字符串response）2.命令行指定
npm --registry https://registry.npm.taobao.org info underscore 3.编辑 ~/.npmrc 加入下面内容
registry = https://registry.npm.taobao.org