网络化视频教学可以不局限于时空的限制,为学习者提供极大的方便。而P2P流媒体技术能充分利用以往被忽视的客户机资源,接收数据的同时可向外转发数据,这样可以减轻服务器的负担,以满足大量用户同时访问的需求。该文利用P2P流媒体技术设计了一个网络化视频教学系统,介绍了系统中使用的P2P流媒体关键技术。 Network video teaching can not be limited to time and space constraints, providing great convenience for learners. The P2P streaming media technology can take full advantage of previously overlooked client resources, data can be received while forwarding data to the outside, so you can reduce the burden on the server to meet the needs of a large number of users simultaneously access. This paper uses P2P streaming media technology to design a networked video teaching system and introduces the key technologies of P2P streaming media used in the system.