The invention discloses an activated carbon polisher. The activated carbon polisher comprises a screw conveyer, a plurality of round balls, a plurality of wear-resisting bars and a door plate; each wear-resisting bar comprises a hard rod, one end of each hard rod is provided with one round ball with the diameter larger than the section diameter of the hard rod, and the wear-resisting bars are arranged on a rotating shaft, are not in contact with rotation blades, and rotate along with the rotating shaft and the rotating blades; and the door plate is embedded into a material inlet, one end of the door plate is hinged to the inner wall of the material inlet, an elastic component is arranged between the door plate and the inner wall of the material inlet, and the material inlet is in the semi-opening state. By means of the activated carbon polisher, material damage is reduced, and the polishing loss rate is reduced; raise dust and material blockage are reduced in the polishing process, obtained finished product particles are even and smooth, dust is avoided, and the quality of activated carbon particles is improved.