The application discloses wet or dry fiberizer, it includes motor, left casing, movable grinding wheel piece, right casing, quiet grinding wheel mount pad and quiet grinding wheel, the left side at left casing is fixed to the motor, and the power output shaft of motor passes the center of left casing, the movable grinding wheel piece is fixed on the power output shaft in left casing, the center of movable grinding wheel piece is provided with the setting gauge, quiet grinding wheel is fixed on right casing, the below of left side casing is provided with the grout outlet, but the top of right side casing is provided with the plug feed inlet, but be provided with the feeding chamber in the right casing of plug feed inlet below, quiet grinding wheel center is provided with the feed port, the front end of setting gauge passes feed port and feeding chamber intercommunication, the movable grinding wheel piece is provided with a plurality of slots in the one side relative with quiet grinding wheel, the conical surface of one side for caving in of the relative movable grinding wheel piece of quiet grinding wheel, and be provided with a plurality of grinding teeth of group on this face. The utility model provides a diamond dust emery wheel toughness is high, and high temperature resistant, self sharpening is strong, and wear -resisting and the cleanliness is high, does, wet material all can grind.