The invention relates to a structure of an oil drum, and belongs to the technical field of oil storage devices. The novel oil drum comprises a drum body, an oil nozzle and an oil nozzle cover. A handle is arranged on the top of the drum body. Reinforcing ribs are arranged on the two side walls and the bottom of the drum body respectively. The reinforcing ribs are in a polygon shape concaved towards the interior of the oil drum from the periphery, and the vertexes of the polygon are provided with lengthened lines concaved towards the interior of the oil drum. The polygon is a square or a rectangle. The drum body is of a split structure and is composed of a left drum wall and a right drum wall which are symmetrical, and the left drum wall and the right drum wall which are symmetrical are connected in a welding mode. The width of the drum walls gradually becomes smaller from top to bottom. The depth of the middle of the drum walls is larger than the depth of the two ends of the drum walls. The novel oil drum is good in anti-pressure ability, long in service life and convenient to use.