Abstract: With the development of mobile Internet, cloud computing and Internet of things, the means of building information management are also widening.GDAD-PCMIS is a Bim-based PC building collaborative management system, which can be used for the whole life-cycle of PC building induding the design, component processing and construction. The system uses the corresponding coding system to reduce the BIM model information, which is later stored in the network database for management applications.Based on the data, the system for the multi-type, multi-unit collaborative process and management points between the project treasury and project progress control system core, supplemented by design financing, meeting information, document management, schedule planning Content, through the mobile side and the computer side for information exchange and full-cycle management.At the same time, the participating units can also use API interface to get access to the internal management system data, and can furtherly mine the value of BIM model information.