Metal 3D printing technology almost runs through the whole cycle of automobile manufacturing, including research and development, production and use. At present, it is mainly used in the experimental model and functional prototype manufacturing, which can greatly improve the efficiency of research and development, reduce the cost of research and development, and improve the performance of parts. In addition, metal 3D printing technology will also be used in the manufacture of automobile tire moulds and metal accessories on car seats. With the continuous development of metal 3D printing technology, its application in the automotive industry will expand to the production and use of larger market space, and provide more development opportunities for automobile manufacturers.