在 node 官网上下载的安装包，用安装包安装的node.应该可以用一下命令行卸载：

sudo rm -rf /usr/local/{bin/{node,npm},lib/node_modules/npm,lib/node,share/man/*/node.*}

cd命令进入/usr/local/目录open 打开各个文件夹，查看是否还有残留文件可以用如下命令继续删除

 sudo npm uninstall npm -gsudo rm -rf /usr/local/lib/node /usr/local/lib/node_modules /var/db/receipts/org.nodejs.*sudo rm -rf /usr/local/include/node /Users/$USER/.npmsudo rm /usr/local/bin/nodesudo rm /usr/local/share/man/man1/node.1sudo rm /usr/local/lib/dtrace/node.d

验证是否成功

 node -v  //not foundnpm -v //not found