3D printing has been applied since the 1980s, just over 30 years, 3D printing this emerging technology has been applied to a number of industries. With the improvement of people's demand for personalized and customized automotive products, as well as the difficulties such as the long time and high cost of manufacturing and maintenance of some traditional complex process parts, 3D printing technology is increasingly favored by auto companies, parts and after-sales service suppliers. As we all know, the automobile industry is a typical capital and technology-intensive industry, and the investment in new car research and development is also very large. As a result, car companies, parts and after-sales service suppliers are actively exploring new technologies to reduce material costs and improve efficiency. 3D printing technology then began to explore and apply in the field of automotive parts, especially in automobile manufacturing and maintenance has become more and more mature.