Abstract: A finite element analysis model of the cutting force of the impact resistant diamond saw blade was established.The numerical simulation and comparative study of the cutting force of the blade were carried out on two kinds of tooth structures, namely the conventional keyhole sink and the new keyhole sink in which there were copper nails embedded at the bottom.The simulation results show that under the same load, the deformation and stress of the saw blade with copper nail embedded at the bottom hole are significantly improved compared with those of the traditional keyhole sink.The deformation of the saw blade is reduced by 6.36%, and the first and third principal stresses are reduced by 38.04% and 41.36% respectively.Therefore, by embedding copper at the bottom hole of the keysink could improve the impact resistance of saw blade, thus making it more suitable for applications with larger loads.