Abstract: In order to improve the efficiency and quality of the design of underground open cut tunnels along the Xiongan east-west axis, this paper researched on BIM (Building Information Modeling) design based on the Dassault platform, proposed a BIM design process for open cut tunnels, and carried out BIM parameterized design for its main structure, enclosure structure, waterproofing, interface, steel reinforcement, etc. The paper used Composer software to implement BIM design disclosure, and integrated and shared the results data, implemented the delivery of BIM results with an accuracy of LOD3.5 from the design stage to the construction stage, provided reference for the application of BIM design in subsequent related projects.