Abstract: Elaborate BIM model is a prerequisite to intelligent construction and intelligent maintenance in railway engineering. In order to improve the efficiency and accuracy of railway bridge BIM design, this paper launches technology comparison for different BIM platform, and the Revit+Dynamo technology route is selected. Firstly, applying nest family and profile family comprehensively, the upper and lower structure family files of bridge are created to form a parameterized family library. Then, integrating customer python node, the Dynamo graphical programming tool is used to develop a railway bridge BIM design program, using table data as input, reading spatial alignment information in XML format, calling parameterized family library, and completing the automated BIM model assembly of various bridge components. Finally, using research results, the bridge BIM design engineering application was fulfilled for newly built Guangzhou-Zhanjiang high-speed railway in Revit environment. After verification, design method proposed in this paper can effectively improve the efficiency and accuracy of railway bridge BIM design, providing a reference for railway bridge forward BIM design.