The present invention provides a seat formed by bonding a trim cover to a foam pad, in which a sewing part of a trim cover can be bonded to a foam pad even when the trim cover is of leather. In a seat formed by bonding a trim cover to a foam pad, the trim cover includes a sewing part where plural trim covers are sewn up, raw material that is impregnated with an adhesive is sewn to the sewing part, and the foam pad and the raw material having been sewn are bonded to each other by the adhesive.