The present study employed an XL-F2000W fiber laser to prepare Ni/WC alloy coatings of varying mass fractions on the surface of 316L stainless steel using laser cladding technology. The cladding coatings' microstructure, hardness, and corrosion resistance were assessed and analyzed through optical microscopy, microhardness testing, and an electrochemical test station. The results show that the cladding coating obtained by the experiment has good metallurgical bonding, uniform and compact structure, and no defects such as hot cracks and pores. The average hardness of the cladding coating exceeds the matrix's hardness by more than 2.2 times and progressively increases with rising WC mass fractions. Furthermore, when the WC mass fraction reaches 40%, the cladding coating demonstrates optimal corrosion resistance.