A sanitary napkin comprises an absorbing body. The absorbing body includes a fluid-permeable top sheet, a fluid-impermeable back sheet, and an absorber arranged between the top sheet and the back sheet. The napkin comprises a cover sheet for covering the surface of the top sheet. A circumferential edge region of the cover sheet is joined to the absorbing body. A flap for fixing the absorbing body to underwear is sectionalized by a sectionalizing line in the central region of the cover sheet. At the time of use, the flap is folded in a folding region and is expanded so as to be fixed to the underwear. A mark is provided on the surface of the cover sheet positioned substantially at the center of the absorbing body to facilitate the positioning of the absorbing body relative to clothing. The mark is colored, but a surrounding portion surrounding the mark is not colored.
