To provide a futon mat cover which houses a futon mat accurately and easily without deviating the direction of the futon mat in the futon mat cover in the application thereof.

The reference of application is given by matching between the center of the futon mat and the center of the futon mat cover and a cylindrical part 9 is provided at the central part of the futon mat cover to arrange bag-like parts 10 and 11 on both sides thereof. In the application of the futon mat cover, it is so positioned that one end of the futon mat is inserted through the cylindrical part 9 and the cylindrical part 9 covers the central part of the futon mat. In this manner, the positions of the futon mat and the futon mat cover are arranged naturally thereby enabling the housing of the futon mat accurately and easily.