Gas leak detector

The gas leak detector comprises a schlieren detection assembly and a supporting assembly, the schlieren detection assembly comprises a detection support, a schlieren mirror, an imaging element and a light source, the detection support comprises a first support, a second support and a connecting piece, and the two ends of the connecting piece are connected with the first support and the second support respectively. The first support and the second support are oppositely arranged on the same side of the connecting piece, the schlieren mirror is arranged on the first support, and the imaging element and the light source are adjacently arranged on the second support; the supporting assembly is connected to the detection assembly and used for moving the schlieren detection assembly. Therefore, gas flow can be visually displayed through the structure of the leakage detector, gas universality is high, special leakage indicating gas is not needed, the requirement for the use environment is not high, and detection can