three-dimensional model of the flower, and the bionic product was reconstructed by the structural constraint. With the lamp as an example, after adjustment of parameters, the product form reconstruction group with flower form characteristics was obtained, and the basic bionic lamp model was gotten. After the structural constraint, the 3D model of bionic lamp was obtained. This method further explores the research of computer-aided product design, and the example shows that natural flowers can generate a large number of innovative preliminary models for form through this method, which improves design efficiency.