In traditional manufacturing methods, the investment and development of molds account for higher costs for enterprises, and the emergence of 3D printing technology has brought a shortcut to manufacturing in the household appliance industry. Through 3D printing rapid prototyping, R&D engineers can quickly convert the three-dimensional model data designed by the computer into a real object. This process is ten times faster than using traditional production methods. 3D printing technology is mainly used for product proofing in the product development stage, such as appearance verification, assembly verification, and small batch production. It reduces mold costs throughout the manufacturing process, shortens product development time and accelerates the pace of new product launches. With the improvement of material properties and the improvement of 3D printing technology, 3D printing technology will be more and more applied to the production of final parts of home appliances. In the future, 3D printing technology will develop towards large-scale products.