An absorbent body 4 is provided between a liquid permeable topsheet 3 and a liquid impermeable backsheet 2, and a second sheet 6 is provided between the liquid permeable topsheet 3 and the absorbent body 4. Slits 10 that penetrate in the thickness direction are formed along a longitudinal direction on both sides of the absorbent body 4 in the width direction, a body fluid expelling portion corresponding region H is included between the slits, the second sheet 6 is provided along an inner surface of the slits, and concave grooves 11, in which the second sheet 6 and the liquid impermeable backsheet 2 are integrated, are formed in the slits. At least a portion of the second sheet 6 constituting one of the side surfaces of the concave groove 11 has water-repellent properties.