Abstract: Selective laser sintering technology is one of the important methods of 3D printing, which is leading a major change in the mode of production and manufacturing. With the continuous development of 3D printing technology, selective laser sintering technology has been widely used in aerospace, biomedicine, architectural decoration and other fields, but there are relatively few research literatures on the application of this technology in the field of mechanical manufacturing. Firstly, the method and principle of selective laser sintering technology are introduced. Then, the application research progress of selective laser sintering technology in the field of mechanical manufacturing is described. Finally, the future development of selective laser sintering technology is prospected. The research content has a certain reference value for understanding the application and research status of selective laser sintering technology in the field of mechanical manufacturing.