The utility model discloses a beam -pumping unit reducing gear box lubricating oil adds gets device, including barrel (oil) pump, oil drum, reducing gear box, the oil drum is connected to barrel (oil) pump one end, and the reducing gear box is then connected to the other end. The reducing gear box upper end sets up the top cap, and the bottom sets up the bottom. Get when putting when reducing gear box lubricating oil, the barrel (oil) pump passes through the oil outlet that the pipeline connection bottom was located. When reducing gear box lubricating oil is markd, the barrel (oil) pump passes through the inlet port that the pipeline connection top cap was located. The barrel (oil) pump adopts manual formula or electrodynamic type or pneumatic type. The utility model discloses solved fast filling or extraction, the unloading problem of beam -pumping unit reducing gear box lubricating oil well, complete equipment sealed tight guaranteed beam -pumping unit reducing gear box lubricating oil add when getting lubricating oil have because of mixing vapor or other problem gaseous and that arouse the pollution that the design is simple, convenient operation, economical and practical, the advantage of easily popularization.