Connector gas leakage prevention device of gas meter

The utility model provides a gas leakage prevention device for an interface of a gas meter, and aims to solve the technical problem that the gas leakage phenomenon easily occurs at the joint of the gas meter and a pipeline due to the fact that the gas meter is mounted outdoors or on a living balcony. The device is connected with a gas inlet pipe and a gas outlet pipe of the gas meter, and comprises two connecting pipes which can be respectively sleeved on the gas inlet pipe and the gas outlet pipe, and one end of each connecting pipe is positioned outside the gas inlet pipe and the gas outlet pipe; the two ends of the square pipe are arranged in the middles of the two connecting pipes correspondingly, and the square pipe communicates with the interiors of the two connecting pipes; the two partition plates are arranged in the square pipe and divide the interior of the square pipe into three mutually independent spaces; the U-shaped pipe is a transparent pipe, is arranged in the square pipe and is located betwe