Combustible gas pipeline maintenance vehicle

The utility model relates to a maintenance vehicle for a combustible gas pipeline, which is composed of a testing box body a vehicle rod, wheels, a gas collecting chamber, an accumulator cell, a gas chamber, a gas sensor, an interface of a probe rod, a gas pump, a roller, a testing box, a chassis and a handle bar, the probe rod composed of a probe head, a stretched tube and a coiled tube, and a display composed of a display screen, various switches, corresponding indicator lamps and relevant electronic elements. The utility model can test the gas leakage of a pipeline under pavement, can test the gas leakage of the pipeline under a pit and a concave position, and can test the gas leakage of a stand pipe of an elevated pipeline; the utility model has reasonable structure, convenient movement, accurate test and complete function.