To bookbind without a cost increase over a bookbinding line of a conventional saddle binding book.

The saddle binding book 2 with a CD is constituted by binding many fold sections 4 at a backbone 802 together with a cover 6 by a binding wire. A container 14 is formed in a bag-like state by fusion bonding four sides of an outer periphery of two rectangular transparent plastic sheets, and the CD 12 is contained in the container 14. A size D1 between a portion disposed at the backbone 802 side of the book of the container 14 adhered to a sheet piece 102 and the backbone 802 of the book is set to 20 mm or above.