The invention relates to a push-pull gun for matched use of the hemorrhoids ligator, comprising a gun case (2), front and back slides (14) (3), upper and lower slide gear racks (4), (6), a gear (5), a large trigger link rod (7), a large trigger (8), a ratchet (9), a small trigger (11), upper and lower link rods of small trigger (12), (13) and a thimble device (15), wherein the front and back slide lower part are inlaid inside the gun case, the upper and lower slide gear racks are displaced inside the gun case, the gear (5) is displaced between the upper and lower slide rack, the upper slide rack (4) connects with the back slide seat (3), the lower slide rack (6) hinges with the large trigger link rod (7) and the larger trigger link rod (7) hinges with the larger trigger (8), the lower part of the large trigger (8) similar to fan ratchet in shape matches with the ratchet (9), the front slide (14) hinges with the upper rod (12) of the small trigger, the upper link rod (12) hinges with the lower link rod of the small trigger (13), the lower link rod (13) hinges with small trigger (11), the thimble device is provided inside the gun case on the small trigger (11). The invention can be operated by one person conveniently without contact with focus of the patient.