In order to better study the application of pulse laser cleaning technology on 316L metal surface of reduction furnace, and improve the decontamination effect and corrosion resistance of metal surface, in this paper, based on the main working environment of polysilicon reduction furnace, 316L stainless steel as the base material was studied. SEM, XRD and EDS were used to test the cleaning results.The optimal parameters and surface were selected by two-stage (micro and macro) evaluation, and the electrochemical strong acid corrosion test was carried out.The results show that the surface of 316L stainless steel after laser cleaning is clean and corrosion resistance is improved, which provides a certain reference for cleaning and application of the inner wall surface of reduction furnace.