Abstract: This paper drew a review of the current status of BIM classification and coding systems from domestic and foreign perspectives. Then proposes a new BIM classification and coding method suitable for domestic rail transit projects, then analyzing the method, reason and significance of its coding systems. On this basis, further research and discussion on the application of coding systems with digital approach were carried, and developed coding schedule which is capable of inputting, auto-filtering, and practical application based on Revit.