Small high-pressure gas bottle

The utility model relates to a small high-pressure gas bottle, including a bottle body and a bottle valve, wherein the bottle valve is arranged at the bottle opening of the bottle body; the small high-pressure gas bottle is characterized in that the bottle valve includes a valve body and a blocking needle, wherein a bottle body connecting part is arranged on the valve body, and an output/input end is arranged at the outset end of the valve body; a through channel extending along the longitudinal direction is arranged at the longitudinal center of the valve body, the blocking needle is arranged in the channel, and the blocking needle can slide between the sealing position and the opening position in the channel. The small high-pressure gas bottle provided by the utility model is simple in structure and convenient to connect, can seal by oneself, and provide enough fresh-keeping gas for a wine fresh-keeping machine, and thereby can ensure the quality of the wine.