Component pressurizing injection gun convenient for plastic surgery department to use

The invention discloses a component pressurizing injection gun convenient for a plastic surgery department to use. The injection gun comprises an injection cylinder, a liquid outlet pipe is communicated with the center of the left side of an inner cavity of the injection cylinder, the left side of the surface of the liquid outlet pipe is sleeved with an injection needle, a push rod is arranged inthe center of the right side of the injection cylinder, and a push handle is fixedly connected to the right side of the push rod. By arranging a liquid inlet pipe, a movable rod, a filling cylinder, ascrew rod, a rotating plate, a screw hole, a filling pipe, a pressing plate, a liquid accumulation conical hopper, a sealing ring plate, a movable hole, a supporting spring, a sealing plate and a sealing column for cooperative use, the filling cylinder can be filled with liquid, the component filling injection gun is more convenient to use, and the problems that when the component pressurizing injection gun is in use, due to the fact that no liquid needs to be added into the injection cylinder, when the disposable injection amount of the component pressurizing injection gun cannot meet the requirement, no secondary injection needs to be performed, and therefore the component pressurizing injection gun is not convenient to use are solved.