To provide a bed for protecting an aged person or a patient having difficulty to turn over freely in bed from a bedsore.

Sleeves 4, 5 are installed on both vertical side faces of a bed body, bands 2, 3 wrapped in with several core materials are laid laterally in one of the sleeves, respective distal ends thereof are aligned each other, to be laid over onto the faced sleeve, one part is rolled clockwise onto a laterally laid band rolling roller 6 installed in a lower part of the sleeve, and one part of the residual is rolled counterclockwise, so as to be fixed. A function is added thereto to determine the number and widths of the bands, while matched with a body situation of a person to be cared, and to regulate lengths thereof, the bands are divided into parts comprising several, one part thereof is attached along a clockwise direction, and one part of the residual is attached along an counterclockwise direction, the band 2 attached along the clockwise direction is tensed thereby when the band rolling roller 6 is rotated clockwise, and the band 3 attached along the counterclockwise direction is slackened therein.