PURPOSE: To obtain strong connection and high operability of assembly and storage by connecting through corner blocks and cap blocks of vertical and horizontal frames, and to prevent troubles in folding and injuries by means of connectors mounted on legs and frame bodies.

CONSTITUTION: A bed is provided with a pair of spaced vertical frames 1 and 1' and a plurality of legs 3 and 4 supported by the vertical frames and assembled foldably in X-shape. The bed is further provided with a sheet member 10 and a horizontal frames 11 assembled detachably in front and at the back of the sheet member 10. The vertical and horizontal frames are connected by detachable corner blocks 12. It is preferable that a space is formed so that peripheral edge parts of connectors 2 and 5 through which the plurality of legs 3 and 4 are mounted on the vertical frames 1 and 1' foldably with respect to the frames are apart from side surfaces of the legs 3 and 4 and vertical frames 1 and 1'. The corner blocks 12 are mounted on the horizontal frames 11 and vertical frames 1 and 1', and the end parts of the horizontal and vertical frames, at which the corner blocks are mounted, are arranged at right angles and coupled detachably to each other, whereby these frames are connected. This assembling work is very easy, and in addition, the folding work of the legs and vertical frames and storing work of the bed are also very easy.