To provide a mat for preventing bedsores which suppresses and relieves sweatiness by adequately dispersing the heat of the parts in contact with the body, has excellent air permeability and flexibility and has a good touch to the skin, and a process for producing the same.

Fine cords 40 formed by coating core yarn formed by intertwining fibers with a compsn. consisting of a chlorine-contg. vinyl resin and ester compd. are double woven between the outer material 20 consisting of cotton chenille yarn and yarn of cotton stock and the lining material 30 consisting of yarn of cotton stock so as to be held therebetween, by which a fabric 10 is formed. The fabric is heated in a heating furnace kept at an atmosphere tap. of 120 to 150°C and is then subjected to a strain relieving treatment, following which the fabric is cut to a specified size. The cut fabric is processed to a flat shape by pressing rolls after the heat treatment and is then cut to a specified size. The cut fabrics are subjected to hem stitching.