The utility model relates to an oil-gas type buffering and damping oil cylinder for vehicle for mining which mainly comprises a cylinder, a connecting body, a front cover, a back cover, an air chamber, an air piston, an inflation valve, an oil chamber, an oil piston, a piston rod, a manifold block and a control valve. The utility model adopts the combining of the cylinder and the oil cylinder, with the compression and the expansion of the high pressure nitrogen, the high-pressure oil source can be injected and discharged, the piston can be dragged, the piston rod can telescopic in order to adjust the distance of the chassis and the rocker of the mining vehicle, and the purpose of buffering and vibration reducing can be reached. The utility model has simple structure, reasonable installing, easy use and good vibration reducing effect, which is an ideal buffering damping reducing device for mining vehicle, and the utility model can also be used for buffering and vibration reducing of other vehicles.