Comb tooth tool

The utility model discloses a comb tooth tool which comprises a fixed bottom plate, a movable plate is installed on the surface of the fixed bottom plate in a sliding mode, the bottom face of the fixed bottom plate and the upper surface of the movable plate are both inclined faces, and the two inclined faces make contact with each other and are used for enabling the movable plate to ascend and descend when the movable plate slides on the surface of the fixed bottom plate. A placing seat is mounted on the upper surface of the moving plate; a placing groove is formed in the upper surface of theplacing seat; a positioning groove is formed in the middle of the inner bottom face of the containing groove, a pressing block is fixedly installed on the surface of the positioning groove through a pressing piece, the two side faces, opposite to the inner wall of the containing groove, of the pressing block and the inner wall of the containing groove are inclined faces, and the side faces of thepressing block and the inn