The present invention provides a bed 10, which comprises: a bed body 100 that is in an approximately rectangular plate shape and comprises a bottom member 110 capable of bending and extending along the longitudinal side direction and a bed base 150 supporting the bottom member 110 of the bed body； and a wheelchair 200 that is in an approximately rectangular plate shape and comprises a chair bottom member 210 capable of bending and extending along the longitudinal side direction. The bed body 100 and the wheelchair 200 comprises a structure that can be selectively combined as the combined state described below: a first combined state, in which one side of the bottom member 110 of the bed body along the longitudinal side direction and one side of the chair bottom member 210 along the longitudinal side direction are approximately opposite to each other to form a flush bed surface； and, a second combined state, in which the other side of the bottom member 110 of the bed body along the longitudinal side direction and the other side of the chair bottom member 210 along the longitudinal side direction are approximately opposite to each other to form a flush bed surface.本發明之床10，具備：床本體部100，具有大致長矩形之板狀形狀，包含可於長邊方向彎折伸展的床本體底部構件110、及支持床本體底部構件110的床基台部150；以及輪椅部200，具有大致長矩形之板狀形狀，包含可於長邊方向彎折伸展的椅子底部構件210；床本體部100與輪椅部200，具有能夠以下述合體狀態選擇性地合體之構造：第1合體狀態，床本體底部構件110之沿著長邊方向的一邊與椅子底部構件210之沿著長邊方向的一邊大致平行地對向而構成齊平之床面；第2合體狀態，床本體底部構件110之沿著長邊方向的另一邊與椅子底部構件210之沿著長邊方向的另一邊大致平行地對向而構成齊平之床面。
