WILA uses the LDM2500-60 semiconductor all-solid-state laser and adopts the synchronous powder feeding iron-based alloy powder method to improve the surface of the high-speed train ER8 wheel by laser cladding to increase its wear resistance and hardness. The orthogonal test selects the relatively superior The process parameters. Using JSM-6360LA scanning electron microscope, Bruker D8ADVANCE X-ray diffractometer, XHV-1000Z digital microhardness tester, M-2000 friction and wear tester, the microstructure and performance of the alloy coating The bonding strength of its interface is tested. The results show that the optimal process parameters are P=1.6k W, v_s=400 mm/min, v_f=25 g/min. The hardness of the coating reaches 444 HV, which is 1.42 times that of the base ER8 steel. Compared with the base material, Its relative wear resistance is as high as 2.1.