High–performance metal powder is an important support for the development of metal additive manufacturing technology. A new method of laser shock–centrifugal atomization was used to prepare tin–copper alloy powder. The influence of process parameters on the morphology of metal powders was studied. The results show that the metal powder particle is spherical with smooth surface

and is mainly distributed in range of 1–20μm. A higher laser energy density input is beneficial to obtain metal powders with a narrower particle size distribution.The ration mechanism of laser atomized powder is discussed preliminarily.