The utility model relates to the technical field of box bodies and discloses a box body which comprises a top cover, side plates, a back plate, box doors and a base. The top cover, the side plates, the back plate and the box doors are of hollow structures. Heat insulation layers are arranged in the hollow structures of the top cover, the side plates, the back plate and the box doors. According to the box body provided by the utility model, the top cover, the side plates, the back plate and the box doors use hollow structures, and the heat insulation layers are arranged in the hollow structures; the heat insulation effect of the box body is ensured, and at the same time the weight of the box body is reduced; and the installation, the maintenance and the transportation of the box body are convenient.