The utility model relates to furniture, in particular to an improvement on a cupboard. The cupboard comprises vertical side plates and a top cover on the top surface, wherein the outer side of each side plate is provided with a panel, the panel is jointed with and fixedly connected with the side plate, and the side plate is retracted at the inner side of the panel in the forward direction of the cupboard; and a cover plate is arranged on the top cover, the cover plate is jointed with and fixedly connected with the top cover, and the top cover is retracted at the inner side of the cover plate in the forward direction of the cupboard. By respectively dividing the original thicker side plates and top cover into two plates and staggering the two plates for a certain distance in the anterior-posterior direction, the thicknesses of the side plates and the top cover are greatly reduced from the appearance perspective, thereby obtaining a beautiful appearance. Since the direct production of thicker plates is not required, the cost is lowered. Besides, gaps between the door plate and the side plates as well as gaps between the door plate and the top cover can be hidden, thereby achieving an obvious dust prevention effect.