To provide a box pallet side wall that is excellent in beauty and is easily cleaned as well compared to a conventional box pallet side wall, and in which weight saving and high strengthening is possible compared to the conventional one. This box pallet side wall forms a hollow structure having an enclosed space therein. Thus, compared to a conventional box pallet side wall having a solid structure, when the box pallet side wall and the conventional one have the same weight, the geometrical moment of inertia of the box pallet side wall is increased. Since cell configuration ribs for reinforcing an outer main plate and an inner main plate are housed in the box pallet side wall and not exposed outside, irregularity on an outer surface of the box pallet side wall can be decreased compared to the conventional one.