To provide a cupboard where a self-supporting skeleton body obtained by constituting a quadrilateral frame by combining four metallic supports and metallic frame members is prevented from being rocked and deformed, and where decoration panels can be fixed without being affected by another quadrilateral frame.

In the cupboard, the self-supporting skeleton body 4 obtained by constituting the quadrilateral frame 3 by combining the four metallic supports 1 and the metallic frame members 2 is formed, at the corners of the quadrilateral frame 3 of the self-supporting skeleton body 4, oblique members 5 are stretched to fix the shape of the quadrilateral frame 3, and the oblique members 5 are present in the quadrilateral frame 3, and the decoration panels 6, 7, 8 and 9 are fixed to the oblique members 5.