The utility model discloses a device capable of reducing the grounding resistance of a pipeline station and prolonging the service life of a grounding body, and belongs to the grounding technology field of an oil gas pipeline station. The device comprises a metal groove box, a resistance reducing agent, and a horizontal grounding body. The metal groove box is of a square structure formed by metal side plates, a metal top plate and a metal bottom plate. The horizontal grounding body is arranged inside the metal groove box. The resistance reducing agent is filled around the horizontal grounding body. The resistance reducing agent and the horizontal grounding body are together sealed inside the metal groove box. The metal top plate and the metal side plates are both equipped with holes. The horizontal grounding body is connected to external grounding lead wires via the holes. The horizontal grounding body and the resistance reducing agent are sealed inside the metal groove box, so the safe running of an oil gas pipeline station grounding system is ensured, the oil gas pipeline station grounding system is improved in safety, reliability and stability and is prolonged in service life, the running cost of an oil gas pipeline station is reduced, and damage and pollution to an environment is minimized.