Abstract: Multi-chip heterogeneous integrated microsystem processes has entered the micro - nano scale. The 3D/2.5D high-density integration with multi-process and cross-scale features puts forward strict requirements on the cost, yield and efficiency of system development. Multi discipline and multi-level collaborative design supported by reusable models is the only effective way to solve this problem. In order to better deal with the problems and challenges in the process of micro system design and development, the research on the architecture and key technologies of the micro system collaborative design platform is carried out in this paper. Taking the micro system collaborative design platform based on standardized model library deployed in the general business secret network by artificial intelligence institute of China electronics technology group corporation as an example, the application scenarios and functions of the platform are analyzed, and the platform operation service system is constructed. The research results show that the platform supports the formation of the ecosystem chain of remote and multi unit collaborative design of microsystems based on the reusable standardized model, and a sharing service and security guarantee mechanism are established. The ecological protection for the efficient and intelligent development of microsystems product is provided.