The present invention includes a first rail (12), a second rail (13), a wheelchair (14) having a first armrest mounting unit (21) to and from which the first rail (12) is attached and detached in one side part, and a second armrest mounting unit (22) to and from which the second rail (13) is attached and detached in an other side part, and a bed main body portion (15) having a first support portion (31) and a second support portion (32), wherein the first support portion (31) has a first bed mounting unit (34) to and from which the first rail (12) or the second rail (13) is attached and detached in a front end, the second support portion (32) has a second bed mounting unit (35) to and from which the first rail (12) or the second rail (13) is attached and detached in a front end, and at the time of coupling the wheelchair (14) and the bed main body portion (15), the first rail (12) and the second rail (13) are installed in line on one side of a bed (11).
