To facilitate nursing work by simultaneously carrying out the attaching and detaching of a diaper and washing of the hip, etc., while allowing a user to lie in a stage section.

The stage section where the user 5 lies down has the diaper attaching and detaching device provided with a diaper support 20 for discharging the diaper 7 mounted at the hip 6 of the user 5 while supporting the diaper. This stage section is supported movably between a discharge position where the diaper 7 is discharged by the diaper attaching and detaching device and a user washing position where the user 5 detached of the diaper 7 is washed. A movable supporting part 32 of the diaper support 20 moves in a longitudinal direction A and the abdominal part 7a of the diaper 7 drops from a rear side open part 34 generated in the rear side position T of this movable supporting part 32. The back part 7b of the diaper 7 drops from a front side open part 34 generated in the front side position U of the movable supporting part 32.