Abstract: A Common Data Environment (CDE) is an effective means to address the lack of coordination in domestic BIM projects and serves as a crucial tool for the digital transformation of the construction industry. Currently, CDE development in China is still in its exploratory phase, with a significant gap compared to international standards. The construction of localized CDE systems also faces core technical challenges such as model data parsing and flow. This paper draws on CDE principles to establish the underlying logic for information sharing and build the AECMate 365 cloud platform. The platform provides a reference for information integration and sharing while also laying the technical foundation for the construction of China Construction's autonomous and controllable ecosystem.