With the widespread application of PPP mode and BIM technology, the construction industry is undergoing significant changes. However, due to the involvement of multiple participants and long time spans in PPP projects, it has led to issues, e.g. a large amount of information and poor data transmission. Taking the Qianjiang Cultural Center project as an example, this paper establishes a full lifecycle PPP project management platform based on BIM technology, and designs the corresponding organizational structure and functional modules. The construction of this platform has achieved effective management of the entire lifecycle of PPP projects. The results in the paper indicate that introducing BIM technology into PPP projects can improve the level of information exchange among all parties throughout the project lifecycle, reduce information silos, and improve the level of refinement in management.