Structural projection refers to the image correction processing of the surface of irregular objects through projection, so that the image and the object are perfectly fused, and a variety of different scene changes are presented. The high-power projector is used, combined with the principle of optical projection, the high-brightness light source is used, and the virtual reality technology and naked eye 3D animation production are relied on. Art works that decorate the facade, stage background and interior space with light and shadow.