In this paper, the axial feed grinding experiment of cemented carbide is carried out with diamond grinding wheel. The transformation models of horizontal grinding force and tangential force, vertical grinding force and normal force are established; The variation of grinding force under different process parameters was measured; The effects of process parameters on normal force, tangential force and axial force are analyzed; The empirical formula of grinding force is established. The results show that in the process of axial feed grinding, the maximum grinding force is the normal force, and the axial force is slightly less than the tangential force. The influence of grinding wheel linear speed on grinding force in three directions is roughly the same. The influence of grinding depth on grinding force in three directions is obviously different. The effect of feed rate on grinding force is not significant.