The structure of subway engineering is relatively complex, which leads to modeling difficulties and low efficiency. There is no common component type of subway in the existing Revit modeled components, so there are relatively few subway engineering cases adopting Revit modeling. Aiming at this problem, a rapid modeling method for subway entrances and exits was proposed, and the Revit API was combined with the C# for the Revit’s secondary development. Taking the structural construction drawing of a certain subway entrance as an example, it used Revit to identify the two-dimensional drawings to quickly generate a solid 3D model of the subway entrance, and quickly placed the corresponding structure of the steel bar structure on the basis of the entity solid model. By applying this method to an actual project, it effectively improves the efficiency of Revit’s modeling of subway entrances and exits, and provides the convenience for the use of BIM technology in subway projects.