1. 用管理员模式打开powershell，输入以下命令
Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;
iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
2. 如果powershell 无法粘贴，需要简单按下图设置
3. 输入命令后，回车，运行结果如下图所示
4. 验证是否安装成功
