In a disk containing body including a containing section (1) for containing a disk (D) formed by mounting a disk main body in a cabinet and a lid section (2) for closing a disk receiving aperture of the containing section (1), the containing section (1) has a rising wall (11) that surrounds at least part of the outer periphery of the disk (D) and rises from the bottom surface of the containing section (1), a pair of anchoring claws (12) projecting from the lateral surface of the rising wall (11) toward each other with the disk (D) interposed between them so as to press the contained disk (D) from the aperture side of the containing section (1) toward the bottom surface thereof and a plurality of supporting projections (13) formed at the opposite sides of the line (A) connecting the pair of anchoring claws (12) and adapted to support the disk (D) at the bottom surface thereof.