Cooperative Template methodology in CSCW Xiaoping Liu School of Computer & Information, Hefei University of Technology, Hefei, P.R. China lxp@hfut.edu.cn With the development of computer network, computer supported cooperative work is becoming one of study points of computer science and technology. We present a concept of cooperative template based on template methodology. The features of cooperative template are repetition, inheritance and reduction of transmission on the net. The key problem is separation between parameters and structure. We introduce a Template Design Markup Language (TDML), cooperative template workflow, some management about template and cooperation, task precedence graph and related algorithm.