Abstract: Multimedia-X-terminal is a network terminal whose user interface is based on multimedia X Window ．Multimedia X-client applications can run in network hosts（high perfomance workstations） ，while output various medias on the terminals with the performance as perfect as used on the hosts．Multimedia-X-terminal based CSCW architecture takes advantage of network transparency of X-terminal．The user modules among which a lot of communication is required are clustered in one high performance workstation，so the performance of multimedia collaborative work is greatly improved．