The system based on IP multicast to implement multipoint communication requires less bandwidth.

Streaming media services such as IPTV pose new challenges to optical networks as the optical networks must provide multicast capability, taking advantage of multicast for bandwidth efficiency.

Because the advanced design of web-based intelligence network framework model is very difficult to become true and to be used in practice, with the three-layer network programming method, multicast, JSP and database, which the intelligent network teaching system is implemented, which will provide application value in our teaching work.

This paper introduced the concept and basic elements of Stream media technology and discussed the application of Stream media technology in distance education, video on demand, internet virtual experiment and video meeting in campus network combined with the RTP and RTCP protocol,RTSP protocol and multicast technology.

IP multicast allows single data package to be sent to receivers from one or more senders in network,especially for distance education.

The paper explains the advantages of IP multicast technology in the network transmission of embedded video monitoring system through comparing three kinds of different network communication ways.

This paper mainly introduces some facts on IP multicast techniques, such as fundamental conception, core based tree, routing protocols.