The influences of different types of PE resin and their mixed use on its grinding performance were discussed,and the formula and process parameters were optimized.The results showed that the system using dicyclopentadiene and allyl ether PE resin had the best grinding performance,and its grinding performance was closely related to the type of powder,dosage,particle size distribution and other factors.It provided a feasible method for improving the sanding property of PE white primer and has certain significance for improving the quality and efficiency of wood coating.