To provide highly convenient unit assembly furniture that can be easily disassembled or assembled (joined), can be easily removed to other location for installation, can be used for various applications, and can increase its variations.

The furniture is composed of a multiple number of unit parts (furniture components) 1, 2, 3, and joint parts (connecting members) that connect these unit parts 1, 2, 3 with each other. Round shape recessed parts 1a, 2a, 3a are provided to specified positions of the external wall of each of the furniture unit parts 1, 2, 3 and two unit parts are linked with each other leaving no space in between by engaging a joint part 4 with the round shape recessed parts 1a, 2a, 3a. Also, the joint part 4 is configured with a multiple number of circular shaped recessed parts on the outer perimeter of a cylinder.