To provide a container body retaining a holder for a record medium disk, which has a large surface area, a high advertising effect, and a strong resistance against external forces and further, which is easily handled.

This container body 1 is provided with a nearly rectangular parallelepiped box body 2 made by punching out a sheet of member printed at least on one side face, a zigzag-shaped member 3 folded to make a crest, a valley, and another crest by turns at least at three folding lines in the box body, and notches 7 retaining a holder 6 containing a record medium disk 5 in the zigzag member 3. There are such container bodies 1 that the ends of the zigzag member 3 and the folded lines 4 contact the inside face of the box body or contact the opposite face of the contents like a manual contacting the inside face of the box body, or at least one face of the box body 2 is double and it can be opened or closed around the corner of the box body, or the box body is formed in a stipulated size like A4, B5, etc.