Structure projection refers to a three-dimensional and rich image image projected on a solid scene such as a building wall, curtain, or landscape, and realizes a visual spectacle combining virtual and real. The seamless combination of objects and shadows, the variety of images, the bright and dazzling light, etc., can easily realize the visual effect of the naked eye 3D, fully provoke the visual nerve of the audience. The application field of structural projection is gradually expanding, and it can involve many places such as conferences, large-scale exhibitions, and promotion activities.