The effect of grinding force on surface quality of zirconia ceramics was investigated by grinding tests.By analyzing the measured data and observing the surface topography,the influence law of process parameters on grinding force and the effect of grinding force on roughness were obtained.The results show that the normal and tangential grinding forces increase with the increase of feed speed and grinding depth,and decrease with the increase of grinding wheel speed; when the grinding force increases,the roughness also increases,and the removal mode changes from plastic removal to brittle removal,which is mainly characterized by pits and fractures; when the grinding depth is more than 25 μm,the chip adhesion phenomenon is easy to appear on the surface of the material,and when the grinding force is between 15 N and 40 N,the surface quality of the material is good.