The invention provides an oil filling barrel with a convenient pouring structure and belongs to the technical field of manual oil filling equipment. The oil filling barrel comprises a barrel bottom, abarrel top and a barrel body, wherein the barrel top, the barrel bottom and the barrel body are of an integrated structure, the barrel top is provided with a handle and an oil outlet, and an oil cover is arranged at the oil outlet; one side of the barrel body is provided with a pay-off reel which is fixedly connected with the barrel body, and an elastic take-up device is arranged in the pay-off reel; a take-up and pay-off spool is wound on the elastic take-up device, and an oil filling funnel is arranged at one end of the take-up and pay-off spool; a tightening switch is arranged on the sidesurface of the pay-off reel, and the oil filling funnel in the normal state is in a tightened state under the action of the tightening switch. Oil filling can be performed accurately, oil filling canbe carried out conveniently and accurately on occasions with poor light, the operation workload is reduced, and the oil filling efficiency is greatly improved.