The approach to collaborative process planning based on CSCW is put forward. The CSCW technology and the application state in process planning in manufacturing enterprise are analyzed. Collaborative process planning model is also founded. Based on the development of collaborative process planning based on integrated on CAPPFramework and Teamcenter in an aviation manufacturing enterprise, the architecture of CSCW -CAPP system is founded. Key technologies of collaborative process planning are discussed in detail. XML tool is used for the communication, cooperation and harmony of collaborative procedures in CSCW-CAPP system.