English：

The complex shape structure brings new challenges to formwork engineering. The traditionalformwork process is difficult to meet the design requirements and is costly. 3D printing technologyprovides an economical and feasible solution for this. Based on a large-span complex shape prefabricatedstructure project, the 3D printing formwork production technology is systematically studied and thespecific scheme is given. The results are successfully applied to engineering practice. With the help ofABAQUS finite element software, the numerical simulation under pouring conditions is carried out. Theresults show that the strength and stiffness of 3D printing fomwork meet the requirements. The hammeringmethod was used for non-destructive testing and load test. The results showed that the internal materialsof the roof truss were dense and no obvious cracks appeared on the surface of the components.