Gas leakage positioning device and positioning method

A gas leakage positioning device disclosed by the present invention comprises a detection assembly, the detection assembly comprises a first shell, a gas sensitive unit and a gas pumping unit, and the first shell is provided with a gas inlet and a gas outlet; the gas sensitive unit is arranged in the first shell and between the gas inlet and the gas outlet, and the gas sensing end of the gas sensitive unit is close to the gas inlet; a gas inlet pipeline of the gas pumping unit is arranged at the downstream of the gas sensitive unit far away from the gas sensing end, and a gas outlet pipeline of the gas pumping unit is communicated with the gas outlet; the invention further discloses a gas leakage positioning method applying the positioning device. According to the invention, the distance between the gas inlet through which the to-be-detected gas enters the detection space and the gas sensing end of the gas sensitive unit is shortened, so that the detection precision of the gas sensitive unit on the leaked gas