To provide a bedsore preventive bedding which maintains the constitution for a bedsore prevention by without becoming an obstacle for motions such as tossing and turning, and also, without reducing the strength around holes, and in addition, without generating a feeling of congruity for a sleeping posture, and also, by which an excretion care can be facilitated.

This bedsore preventive bedding A has a supporting surface which supports the body lying on the back through a specified pressure. The bedsore preventive bedding A is constituted by providing a longitudinal groove part 2 which is formed in a manner to be not in contact with the location of the supporting surface corresponding with the backbone of the body lying on the back, and a lateral groove part 3 which is connected with one end of the longitudinal groove part, and is formed in a manner to be not in contact with the location of the supporting surface corresponding with the lumbus bone upper part of the body lying on the back.