With the improvement of aesthetic demands, special-shaped bridge with unique shape and beautiful lines came into being. BIM modeling technology faces more challenges., Aiming at the characteristics of special-shaped bridges, this article taking Xiamen Footpath special-shaped bridge as the background, a rapid modeling method for special-shaped bridges is established on the basis of Autodesk software platforms and combination of Dynamo, Excel and secondary development technology. This method realizes the visualization, parameterization, batching and repeatable modeling, which can effectively improve the modeling efficiency of special-shaped components, reduce the manual modification error, reduce the labor and time cost, and compensate the shortcomings of traditional modeling methods. Moreover, taking the landmark Yuanshan Bridge project as an example, the application of structural analysis, clear height analysis, drawing check, engineering quantity check and BIM + expansion, etc., are carried out, which can provide reference for the following similar projects.