The work aims to optimize the HIPSN ceramic highly efficient and precision grinding process in order to solve low efficiency, high cost and high difficulty of HIPSN ceramic precision machining. High-precision ORBIT36CNC forming grinder was used to test HIPSN ceramics, and analyze the influence of process parameters such as grinding wheel speed, grinding depth and workpiece feed rate on the surface quality of workpiece. The grinding depth increased from 0.005 mm to 0.050 mm and the surface roughness decreased from 0.2773 μm to 0.2198 μm and then tended to be stable. The workpiece feed rate increased from 1000 mm/min to 15 000 mm/min. The surface roughness decreased from 0.2454 μm to 0.2256 μm, then increased to 0.2560 μm, and finally tended to be stable. The linear velocity of grinding wheel increased from 20 m/s to 50 m/s, and the surface roughness decreased from 0.2593 μm to 0.2296 μm. As the workpiece feed rate increased, the average gap Sw of surface waviness increased to 5.90 mm from 0 mm, while with the increase of linear velocity of grinding wheel, the average gap Sw decreased to 0.68 mm from 2.33 mm. Optimized process parameters included wheel speed of 50 m/s, grinding depth of 0.030 mm and workpiece feed rate of 3000 mm/min. The surface roughness negatively correlates to the grinding depth and the linear velocity of grinding wheel and decreases firstly and then increases as the workpiece feed rate increases and finally tends to be stable. Decreasing the workpiece feed rate and increasing the linear velocity of grinding wheel can improve the surface waviness.