With the development of social economy and technology,modern architectural shapes are becoming diverse and complex in-creasingly.More and more special-shaped large-space curved buildings have emerged,which makes the design of building structures more dif-ficult.A public buildings in Shenzhen,its second floor of the outdoor public platform reaches the first floor of the outdoor ground through large steps and ramps.The three forms of curved curtain wall,curved landscape grass slope and vertical greening are connected to make the second floor present the effect of special-shaped curved surfaces.Through the application of BIM technology,this project realizes the accu-rate expression of special-shaped curved surface structures and improves the efficiency and quality of building structure design.The following will explain the specific application of BIM technology in the structural design of special-shaped curved buildings.