As China's market survey and design competition, designing and management in design firms faces many challenges: the huge construction projects, the shorten of the duration, more frequent changes, etc., Cooperative design is the development of the industry the trend. How to design their own structures for cooperative design platform, is for each to co-design companies are faced with the problem. Bentley's ProjectWise is a more mature general engineering content management platform, this discussion is on this platform, custom development, in order to build truly collaborative design for the enterprise platform.