Disposable gas alarm metering detection device

The invention relates to the technical field of gas concentration detection, in particular to a disposable gas alarm metering detection device which comprises a gas storage bottle, a gas valve installed on the top of the gas storage bottle and a pressure detection meter installed on one side of the gas valve. A detection part for detecting gas concentration and alarming is arranged at the tail end of the ventilation part; the detection part comprises a detection box, a gas sensor transversely arranged in the top of the detection box and an alarm. According to the device, the ventilation part switched between the extending state and the rolling state is arranged, the reinforcing wires are used for assisting the ventilation pipe in straight extension and elastic rolling volume for storage, detection, storage and carrying of a high position are facilitated, and the safety and adaptability of detection are improved; the two-dimensional code is attached to the outside of each gas storage bottle, the two-dimensiona