The anti heavy WC coating can be prepared on the surface of titanium alloy by spray-welding,spraying and laser cladding. The WC wear-resistant coating of 2 400 μm can be prepared on titanium alloy by flame spraying welding. The coating is metallurgical bonded with the substrate,and the hardness changes gradient. The properties of the coating can be improved by pre-activating the surface of titanium alloy,increase remelting processing,and use medium-temperature tempering. The wear-resistant WC layer can be made 4 153 μm on titanium by high velocity oxygen fuel( HVOF) method,the powder is agglomerated sintered WC-Co powder. The W_2C brittle phase and η reactive phase may appear in spray coating. The porosity of the coating can be less than 1% by control the spray process. The WC wear-resistant coatings of 2 900 μm thickness can be prepared on titanium surface by laser cladding. The coating combined with matrix is metallurgy,but,there are defects such as cracks and blowholes. These three methods all can make millimeter-scale coating. These millimeter-scales coating will greatly extend service life of equipment.