The invention discloses a circular diamond saw blade with a sawtooth edge. The circular diamond saw blade with the sawtooth edge is characterized in that one or a plurality of grooves which are open outwards are formed in the edge of the saw blade along the saw blade center direction; and through grooves with triangular cross sections, which face the center of the saw blade, are also formed in the edge of the saw blade. The circular diamond saw blade with the sawtooth edge has the beneficial effects that when the circular diamond saw blade with the sawtooth edge is used, the impact caused by disalignment of the edge of the saw blade and cut materials is reduced, so that the per se rest and reorganization of the circular diamond saw blade are completed in relatively short time, and the saw blade is relatively safe in use and relatively smooth in a cutting process.