Miniature air quality monitor

The utility model relates to the technical field of air detection, in particular to a miniature air quality monitor which is characterized in that an air detection module is mounted in a shell and comprises a gas irradiation mechanism, an optical filter conversion mechanism and an infrared photosensitive element, and the gas irradiation mechanism and the infrared photosensitive element are correspondingly arranged; the optical filter conversion mechanism is arranged between the gas irradiation mechanism and the infrared photosensitive element; the optical filter conversion mechanism comprises a plurality of conversion discs and light holes, the conversion discs are circular, the conversion discs are sequentially distributed along the same straight line, the central axes of the conversion discs are parallel to the straight line, every two adjacent conversion discs are arranged in a staggered mode, each conversion disc is in transmission connection with a driving mechanism, the driving mechanisms are used for d