Environmental gas detector

The utility model relates to the technical field of gas detectors, in particular to an environmental gas detector which comprises a box body, the interior of the box body is divided into a first cavity and a second cavity from top to bottom, a getter pump, a storage battery and a gas detector body are arranged in the first cavity, a gas inlet of the getter pump is connected with a gas inlet pipe, and a gas outlet of the gas detector body is connected with a gas outlet pipe. The end, away from the gas suction pump, of the gas inlet pipe penetrates through the side wall of the box body and is detachably connected with a filter cover, a gas outlet of the gas suction pump is connected with a gas inlet of a gas detector body, and a gas outlet of the gas detector body is connected with an exhaust pipe; one end, far away from the gas detector body, of the exhaust pipe penetrates through the side wall of the box body and extends outwards, impurities in gas can be filtered, the effect of reducing errors can be achieve