Abstract: Xiongan Pavilion in Xiongan Country Park is a special-shaped building integrating exhibition, catering and accommodation. The interior decoration is fine and beautiful, and the building's shape is peculiar. However, it is difficult to model for its special-shaped decoration components through BIM technology. In this paper, parametric modeling tools are used to model different special-shaped components; Revit software and Dynamo plug-in are applied to achieve the modeling of mushroom-shaped decorative columns; Grasshopper plug-in is employed to achieve the modeling of special-shaped dome and hexagonal ceiling, which greatly improves the efficiency of modeling. From the work above, this paper can provide references for other complex decoration engineering modeling.