An automatic machine for processing a tooth by a graft material includes: a body including a power supply supplying power to a controller, which controls the amount of supply solution and operation of a suction pump and a vibrator, and having a receiving space; a receiving container disposed in the receiving space, having a space for keeping a tooth bone graft material, and including a net and a cover having a handle; a cylinder having a space for keeping the receiving container, and inlets and outlets for supplying and discharging the supply solution; a vibrator fastened to the cylinder and generating vibration of 1 to 100,000 VPM; a supplying container supplying the supply solution to the cylinder; and a suction pump discharging solution in the cylinder to a discharging container.