The material of Inconel617 alloy has the properties of corrosion resistance, high temperature oxidation resistance and wear resistance in the practical application. But, its wear resistance is poor. In order to improve the wear resistance of Inconel617 alloy, HVOF (high velocity oxygen fuel) and electron beam surface modification technology were used to prepare WC-CoCr ceramic coating on Inconel617 alloy. The microstructure and element distribution of the alloy layer were analyzed. Hardness and wear resistance of the alloy layer were tested. The results show that in the process of electron beam processing, the forming metallurgical bond of coating remelting and matrix could increase wear resistance significantly. Compared with the substrate, hardness of the cladding layer improves significantly.