Gas detector

The utility model discloses a gas detector which comprises a main body and a gas inlet arranged at the top of the main body, a sealing structure is arranged between the main body and the gas inlet and comprises a sealing ring arranged at the top of the main body, the sealing ring wraps the outer side of the bottom end of the gas inlet, an inner groove is formed in the inner side of the sealing ring, and the gas inlet is arranged in the inner groove. A rubber ring is arranged in the inner groove and is in extrusion contact with the surface of the air inlet; through the designed sealing structure, the sealing effect between the main body and the gas inlet is improved, the gas tightness between the main body and the gas inlet is ensured, gas leakage is avoided, and gas absorbed by the gas inlet can be accurately detected and analyzed by the main body, so that the accuracy of a detection result is ensured, the detection error is reduced, and the detection efficiency is improved. The normal use of the gas detector