Product design is a creative and comprehensive information processing process. Through the combination of multiple elements, lines, symbols, numbers, colors and other ways, the shape of the product is displayed in a flat or three-dimensional form. Through the designer screening scheme, modeling, rendering, and initially establishing a three-dimensional design, people can see the design scheme more intuitively and make it easier to carry out the next production. Product structure design is an important part of product production, which directly affects the manufacturing cost, production cycle, appearance and quality of products. Structural designers need to have professional skills and broad knowledge vision. Structural designers not only need to master three-dimensional software, but also need to master plane CAD software. The designer's familiarity with the software directly affects the efficiency of making products; in addition to mastering the software operation, the structural designer is also required to be familiar with the product structure, In-depth study of mold structure related knowledge; mastering the plastic performance can more accurately determine the material of the product, and the material cost of the product is directly related to the price of the product, see if the selected materials are convenient for post-processing and affect the image of the product. Professional skills are the foundation, work experience will be more and more, constantly enrich their own experience, master more skills, in the design process continue to accumulate experience, explore and perfect, design better products.