摘要：This paper present an architecture of Web-based collaborative 3D CAPP （Computer Aided Process Planning） system. It is a three tired system basis of the VRML and ActiveX technology. This Web-based system implements collaborative functions such as fixture design, process planning, G-code simulation, etc. The manufacturing resource management also discussed, which composed of equipments information management, fixtures information management, cutting tools information management and process pa- rameters information management. In the end, the procedure of collaborative process planning based on this Web-based system is in- troduced. This 3D CAPP system can be used for geographically distributed engineers to make optimized process planning of the part or assembly.