Abstract: The preparation of hard coating on the surface of the part can improve the surface performance of the part on the basis of maintaining the performance of the substrate itself. WC/Ni60 coatings were prepared on 45 steel substrate by surface adhesion and electrical contact strengthening. The microstructure and properties of the coatings with different WC contents were studied by scanning electron microscope, hardness tester, friction and wear test and thermal shock test. The results show that complete and uniform WC/Ni60 coating can be prepared on the surface of 45 steel by using surface adhesive coating technology and then by using contact strengthening technology to strengthen the coating. At the same test conditions, the hardness and thermal shock resistance of the coating increase with the increase of WC content. When the WC content is 60%, the surface hardness is highest and the thermal shock resistance is best. When the WC content is 50%, the wear weight is lowest and the wear resistance is best.