Abstract: Discusses in brief the direction of progress of Web teaching systems, the shortcoming of current teaching system, and the main problems that such an interactive teaching system can resolve. Introduced in more detailed are the model of the Web teaching system based on CSCW, the Client/Server structure based on two level server and the functions of multimedia database and other interactive tools. Aiming at what the system can resolve in teaching activities the paper brings forward the idea about a new pattern of teaching and learning using such a system.