Roadway air gas content detector

The utility model provides a roadway air gas content detector, which relates to the field of air gas content detectors and comprises an inductive head, an air passage arranged in the inductive head, a one-way valve mounted in the air passage, an equipment box mounted at the bottom of the inductive head, air chambers mounted on two sides of the equipment box, support ribs mounted on the inner walls of the air chambers, and a sealing plate mounted at the bottom of each air chamber. Air in the air chamber is discharged outwards along the one-way valve in the sealing plate by extruding the air chamber, external air enters the air chamber along the air channel by loosening the air chamber, part of the air enters the equipment box along the air channel in the process of entering the air chamber, and the gas content in the air is detected and displayed by the gas detection device in the equipment box. By utilizing the deformation of the air chamber and the limitation of the one-way valve on the air flow, a large amo