Abstract: Selective laser sintering of a two-component Ni-CuSn powder mixture has been successfully processed based on the mechanism of liquid phase sintering during which partial melting of powder occurred.The effect of laser processing parameters on the sintering mechanism and sintering quality were studied.It shows that controlling the processing parameters,especially laser powder and scan speed in a suitable range can ensure anticipant sintering mechanism and sound densification.The analysis on the microstructural features of the sintered sample demonstrates the conditions for achieving high densification level,that is,the obvious difference in the melting point of Ni and CuSn,and the high mutual solubility.