Filling gun capable of reducing refrigerant loss

The invention relates to the field of filling guns, in particular to a filling gun capable of reducing refrigerant loss. The filling gun comprises a handle, wherein the top of the handle is fixedly connected with a gun body, one side of the interior of the gun body is fixedly connected with an electromagnetic valve seat, an ejector pin cylinder is fixedly connected to one side of the electromagnetic valve seat, a pneumatic contractile ejector pin is movably inserted into the ejector pin cylinder, a second spring is movably arranged on the outer surface of the pneumatic contractile ejector pinin a sleeving mode, a release seat is rotatably connected to one side of the ejector pin cylinder, a honeycomb fixing frame is fixedly connected to the middle of the interior of the release seat, an ejector pin sleeve is fixedly connected to the interior of the honeycomb fixing frame, and a sealing ejector pin is movably inserted into the ejector pin sleeve. According to the filling gun, a refrigerant sprayed out by a gun