Gas leakage monitoring device of hydraulic system

The invention discloses a gas leakage monitoring device for a hydraulic system. The gas leakage monitoring device for the hydraulic system comprises at least two sealing modules, at least two sampling modules, a measuring module and a central processing module, the sampling modules are arranged in the corresponding sealing modules; the sealing module is arranged in a preset position area of the hydraulic system and forms a closed space with the preset position area; the sampling module samples gas and transmits the sampled gas to the measuring module; the measurement module measures the concentration of the gas sampled by the sampling module and transmits a measurement result to the central processing module; and the central processing module determines whether gas leaks at the preset position according to the measurement result. According to the technical scheme of the embodiment of the invention, by arranging the hydraulic system gas leakage monitoring device, whether gas leaks or not and the leakage positi