Abstract: The stress state, natural frequency and critical load of diamond circular saw blades are studied by finite element analysis method, which are influenced by the rotation speed, diameter of clamping disk, thickness and diameter of saw blade, so as to explore the relationship between process parameters and blade processing stability. The analysis shows that the dynamic stability of circular saw blade is closely related to the process parameters such as blade speed, clamping disk diameter, blade thickness and blade diameter. In order to improve the dynamic stability of the saw blade, the saw blade with higher speed, larger diameter of clamping disk, larger thickness and smaller diameter were selected based on the influence of the process parameters and experimental measurement results to obtain a smaller stress value, a larger natural frequency and a critical load.