In order to solve the problem that it is hard to process the HVOF tungsten carbide coatings, super high speed grinding experiments were carried out. The grinding forces and the surface roughness were measured, and the surface microstructure was observed under different grinding conditions. The results have shown that, with the substantial increase in wheel speeds, the grinding forces and surface roughness can be significantly reduced. Under the conditions of super high speed grinding, the plastic gives priority to the coating material removal way. In a word, under the conditions of super high speed grinding, the surface quality and the grinding efficiency and service life of the grinding wheel in coating workpiece grinding have been obviously improved.