The invention provides an absorption device, which is characterized in that: a pair of grooves (51, 51), with shapes roughly symmetric along a center line extending along the length direction of an absorption layer (10), is arranged on two side parts along a length direction at one side of a skin contact surface of the absorption layer (10), and respectively formed by being bent toward the outer side of a width direction into convex shapes at the central area of the length direction a pair of rear grooves (52, 52) at inner side, and a pair of rear grooves (53,53) at outer side are positionedon the rear parts of the length direction of the absorption layer (10) space between the pair of rear grooves (52, 52) at inner side gets more narrow along the rear parts the pair of rear grooves (53,53) at outer side are positioned outside the width direction of the rear grooves at inner side, and extend to the rear parts of the length direction of the rear grooves at inner side.
