Abstract: In order to solve the problems involving many participants, large professional span and high requirements for refined management of construction process in the whole life cycle of railway construction, this paper designed the BIM+ railway refined management and control platform. The paper associated the 3D model with the construction information, and combined the Internet of Things, big data, cloud storage and other technologies to control the project quality from the aspects of construction organization optimization, progress tracking, comprehensive display and analysis, so as to implement the all-round and multi angle management of the railway project construction process. The platform has been applied to the project construction of Xiong'an Grand Bridge. The application results show that the platform can assist the construction and improve the construction efficiency, and help the informatization development of railway construction.