To provide storage furniture also used as a chair that can be constituted in complicated assembled shape or pattern with a user's intention.

Mounting holes 1 are arranged at constant spaces in storage furniture constitutive surfaces 2 and bottom constitutive surfaces of single bodies of storage furniture also used as chair having cylindrical parts of square cylinder type, L-shaped cross-section cylinder type, polygonal cross-section cylinder type, or the like, and the directions of the single bodies of storage furniture also used as chair are set uniform vertically, laterally and longitudinally or the directions are changed for connection to form the complicated constitution and pattern according to the user's intention.