The invention relates to a saw blade grinding machine. The saw blade grinding machine comprises an operation table, bearing seats symmetrically arranged on the operation table, a rotating shaft rotationally connected with the bearing seats, a boss arranged at one end of the rotating shaft, a fastening nut arranged at the end, close to the boss, of the rotating shaft, a power device used for driving the rotating shaft to rotate and a grinding device used for grinding a saw blade, wherein the grinding device comprises a rotary table rotationally connected with the operation table, an operation arm hinged to the rotary table, a cantilever fixed on the operation arm and a locking nut arranged on the cantilever, a workbench is arranged on the operation arm, a pressure adjusting device is arranged on the workbench, and the cantilever is fixed on the pressure adjusting device. The saw blade grinding machine is used for grinding the side surface of a saw blade base body, the single-time grinding amount is large, and the working efficiency can be effectively improved.