Because titanium carbonitride TiCN powder having overall performance of TiC and TiN, its hardness higher than TiC and TiN, has a high melting point, high hardness, wear resistance, oxidation resistance, corrosion resistance and other characteristics, and good thermal conductivity, electrical conductivity and chemical stability, and therefore is an ideal tool coating material. Titanium carbonitride coating can improve the bonding strength with the substrate, while having the overall performance of a variety of materials.