Abstract: The space twisted steel tower of Yongding River Bridge is one of the most difficult problems in the design of the bridge. By introducing the parametric BIM design platform, the problem of the twisted steel tower design of the bridge can be successfully solved by using the parameterized curved surface design function, and the collaborative design problems of complex steel structures of bridges can be effectively solved by the "skeleton + template" modeling method. The introduction of BIM technology not only laid a solid foundation for the successful completion of the bridge design, but also provided an accurate data model for the implementation of the bridge project and the operation and maintenance of the bridge.