Abstract: In order to improve the surface strength and hardness of the material, laser cladding technology was used to clad the alloy coating on the surface of the material to improve its surface properties. Nickel-based (Ni60) composite coating was prepared by laser cladding on the surface of material under the same laser power at different laser scanning speeds, and the processing parameters for obtaining the ideal cladding layer on the surface of the substrate were obtained. The properties of the cladding layer were detected. The results show that, with the increase of the laser scanning rate, the surface roughness becomes larger, the width, height of cladding layer and the melting depth of the substrate are reduced to a certain extent. The cracks appear to increase. The microhardness of the cladding layer is about 500HV higher than that of the substrate. The laser cladding technique can realize the hardening of substrate surface in a certain range. The results provide a reference for the study of surface strengthening of materials.