The invention discloses a clinical nursing sickbed. By arrangement of a standby bed consisting of a first standby bed plate and a second standby bed plate, an accompanying person can sleep and have arest conveniently; by cooperation of pulleys and a bracket, the standby bed can slide in or slide out from the left side and the right side of a bracket, and is used conveniently; by cooperation of anextension portion and a square groove, the waist position of the accompanying person can also be supported when lying on the standby bed, and the accompanying person cannot feel uncomfortable; by cooperation of a slot, a first screw and an inserting portion provided with a plurality of adjusting holes, the overall length of the standby bed consisting of the first standby bed plate and the secondstandby bed plate is adjusted conveniently; and by cooperation of a connecting lug, a third screw and a limiting plate, the standby bed in the bracket is stopped from sliding out in ordinary times. The standby bed can be conveniently used when the accompanying person needs to have a rest. The clinical nursing sickbed is simple in structure and convenient to use and adjust.