The laser cladding forming technology can be used to realize parts remanufacturing,but the surface quality and precision of the formed parts need to be improved by milling.In order to analyze the influence of milling parameters on surface roughness and surface morphology of 316L stainless steel laser cladding parts，multiple linear regression equations were established through orthogonal design and optimal design.To improve the surface quality,range analysis and response surface analysis were used to optimize the parameters and the optimization results were compared.The results show that the significance of influence of each parameter on the surface roughness is feed vf,milling width ae ,milling depth ap,mainshaft speed n ;multiple quadratic regression model has higher significance and better accuracy；the best surface quality and morphology are obtained by the response surface optimization parameter combination.