A bookbinding apparatus (B) for providing wrapping-binding of a booklet by bonding a cover sheet (K) on the spine portion of a sheet bundle (5a) to wrap the sheet bundle (5a) with the cover sheet (K), wherein the sheet conveyance path of the bookbinding apparatus includes a notch forming device (90) to form notches (V) on the end side to be coated with adhesive when the sheet (S) is subjected to bookbinding process.
