The PPP project of Fuyang Grand Theater has design innovation. The project is novelty in structure, elegant in posture, and uniqueness in form. The facade of the building is compositing of three rose petals through circular inclined columns, long-span hyperbolic reinforced concrete beams, and special-shaped grid steel structure, which is highlighting the design concept of "Seven Colored Roses". The diagrams of multi-curved structure is difficult to be read. The construction process of circular inclined column and long-span hyperboloid concrete beam is far more complex than that of ordinary reinforced concrete. The hoisting volume of steel structure is large and the form is complex. The traditional reinforced concrete and steel structure construction process can not meet the construction quality and progress requirements of the project. Through BIM Technology, three-dimensional modeling, three-dimensional simulation, numerical extraction, working condition analysis, and other technologies, the research is being carried out in the aspects of wavy concrete ring beam, highly inclined concrete column, and rose petal grid curtain wall for achieving the accurate construction of multi curved composite structure and for providing the references for those subsequent similar projects.