Manual high-pressure grease gun

The utility model discloses a manual high-pressure grease gun which comprises a gun barrel (3), a headstock (9), a handle (1), a pull rod (5), a spring (4), a rubber piston ring (7), a handle (17), a plunger piston (10) and a connecting piece (15), wherein the pull rod (5) is arranged in the gun barrel (3) after being sleeved with the spring (4) and is fixed with the rubber piston ring (7), one end of the draw rod (5) extends outside the gun barrel (3) and is connected with the handle (1), the plunger piston (10) is arranged on a plunger piston hole of the headstock (9), one end of the plunger piston (10) is hinged with the handle (17), one end of the connecting piece (15) is hinged on the headstock (9), the other end is hinged on the handle (17), an exhaust groove (19) is arranged on the headstock (9), and a seal ring (16) which is matched with the end surface of the headstock (9) is arranged on the gun barrel (3). With the structure, the manual high-pressure grease gun has the advantages of simple and reaso