Abstract: In order to solve the problems of repeated modeling and poor data transmission in the design process of Building Information Modeling (BIM) of railway civil engineering, this paper took subgrade, bridge and tunnel as the representative, and started from the three-dimensional collaborative design environment, put forward the information transmission and design maturity management methods, and implemented the effective management of model data and the effective implementation of BIM technical standards. Centering on the "skeleton-template" design method, the paper proposed the BIM design process of civil engineering, which was formed by skeleton design and component template assembly design, and implemented the civil engineering design process reengineering under the three-dimensional BIM environment. The paper also studied the interface design technology between civil engineering, which gave full play to the application value of collaborative design environment in the field of civil engineering. This study provides an effective path to meet the information needs of various specialities, and can provide reference for the application of BIM technology in railway engineering.