The invention discloses an oil-gas well high-energy gas gas-lift reagent test evaluation device which comprises a device body comprising a tubular shell. The upper interface and the lower interface ofthe shell are connected with an upper plug and a lower plug through threads respectively. A relief valve is arranged on the upper plug. The lower plug is equipped with a wiring terminal which is connected with an ignition electrode arranged in the tubular shell through a lead. The upper plug, the lower plug and the tubular wall of the tubular shell are provided with pressure sensors. The relief valve and the pressure sensors are communicated with the cavity of the tubular shell through a valve seat and sensor seats respectively. The invention is reasonable in design and simple in structure andcan measure the P-T curve of the high-energy gas gas-lift reagent test, thereby providing reliable theoretical base for working design.