Gas detection device

The invention belongs to the technical field of gas detection and analysis, and particularly relates to a gas detection device. The gas detection device comprises a gas chamber with a containing cavity, a reflection structure located in the containing cavity, an emission light source located in the containing cavity and a plurality of receivers located in the containing cavity, the containing cavity is used for allowing to-be-detected gas to circulate, the receivers and the emission light source are all arranged on the bottom side of the containing cavity, and the receivers are arranged around the emission light source. The reflection structure comprises a plurality of reflectors arranged in an array, the reflectors are adjacent to one another around a common connection point, the emission light source is arranged right opposite to the common connection point and used for projecting light rays towards the common connection point, and the receivers correspond to and face the reflectors respectively. And the pl