Hard Alloy saw blade is the most commonly used cosplay cutting tool for wood products processing. The quality of hard alloy saw blade is closely related to the quality of processed products. Proper and reasonable selection of hard alloy saw blades is of great significance for improving product quality, shortening processing cycle and reducing processing cost. Hard Alloy saw blades contain alloy cutter head types, matrix material, diameter, tooth number, thickness, tooth profile, angle, aperture and other parameters, which determine the processing capacity and cutting performance of the saw blades. When selecting the saw blade, the saw blade should be correctly selected according to the type, thickness, sawing speed, sawing direction, feeding speed and kerf width of the sawing material.