Diamond circular saw blade

The utility model relates to a diamond circular saw blade, which comprises a stainless steel base body. A center hole with slots is arranged in the middle of the stainless steel base body, a plurality of diamond tool bits which are distributed at intervals uniformly are arranged on the periphery of the stainless steel base body, outer sides of the diamond tool bits are provided with grooves, and the diamond tool bits include a plurality of common diamond tool bits and at least three base protecting diamond tool bits distributed at intervals uniformly. The diamond circular saw blade has the advantages that the grooves used for discharging chips are arranged on the diamond tool bits in a moving direction of the circular saw blade, thereby reducing contact area of the diamond tool bits and stones and resistance, increasing sharpness and then increasing working efficiency. At least three large-sized base protecting diamond tool bits protect the stainless steel base body, thereby prolonging service life of the dia