At present, there are two kinds of 3D printers widely used in jewelry industry-1and wax spraying machine. At present, it is mainly projict 35 10/0, and the price and materials are relatively expensive. 2.DLP printer, using photosensitive resin, is mainly winmaker at present. These two machines have their own advantages and disadvantages. The equipment and materials of wax spraying machine are expensive, and the precision will be lost when the mold is inverted. Winmaker machine in Wharton era is made of resin. It is difficult to remove the resin in the process of reverse molding, but it has high precision and high cost performance. At present, these two machines are widely used in the jewelry industry and can be decided according to their actual situation.