Decoration structure outside oil tank of diesel locomotive

The invention discloses a decoration structure outside an oil tank of a diesel locomotive. The decoration structure comprises decoration plates mounted on the two sides of the oil tank, the outer surfaces of the decoration plates and the outer surface of the oil tank are located on the same plane, and the tops of the decoration plates are fixedly mounted on a frame side member. The decoration structure is simple, reasonable in design and convenient to mount, the outer surfaces of the decoration plates and the outer surface of the oil tank are located on the same plane, the decoration plates and the oil tank are like a whole, appearance attractiveness is guaranteed, the areas of the decoration plates are greatly reduced, and cost is reduced.