To provide a toy box as an intellectual training toy, capable of learning while having fun, wherein a large but uninteresting and hard-to-use toy box can be assembled/disassembled without using a tool.

A box as a model includes a bottom plate, both side plates, front and rear plates, and a top plate, which are formed of components. Each of the components has a cutout or a protruding groove. They are assembled by fitting, engagement or nipping. The box can be assembled/disassembled without using a tool, to serve as an intellectual training toy having some openings and a car.