一.进入Cisco Networking Academy Builds IT Skills & Education For Future Careers (netacad.com)

二.注册，成为其用户Global NetAcad Instance | Networking Academy

三.登陆后下载Global NetAcad Instance | 下载 Cisco Packet Tracer | Networking Academy

下载后进行安装，next到底就行，然后按你注册的信息登录cisco packet tracer即可。