The Public-Private-Partnership projects have been greatly developed in recent years. Generally, in ourcountry, the role of public partnership is always undertaken by the government. Therefore, the project is gaining both the advantages of the policy and the technical and financial support of the social professional enterprises. However, the PPP project also rises high requirements on cost control in theconstruction, operation and maintenance process. Hence, the cost transparency, and visualization and simplicity of management will all be the key points to the success of the PPP project.This paper mainly discusses the application strategiesof BIM technology in PPP project, and the economic benefits of the application.