The absorbent article suppresses fixed portions by heat welding in leakage barriers from coming in contact with a skin of the wearer. The absorbent article (1) includes the absorbent main body (AB), the pair of side flaps (7, 7), the pair of leakage barriers (5, 5), and the elastic member (11) which is joined in between the pair of side flaps in the absorbent main body, and is stretchable and shrinkable in the width direction. Each of the pair of leakage barriers includes the standing portion (5c) in which the outer side in the width direction is the fixed end, and the inner side in the width direction is the free end, and the supporting portion (5b) which is adjacent to one end portion in the longitudinal direction of the standing portion and overlaps with the elastic member in the thickness direction. The supporting portion (5b) includes the inner side portion (5SI) which is positioned on the inner side in the width direction and is not fixed to the absorbent main body, and the outer side portion (5SO) which is positioned on the outer side in the width direction and is fixed to the absorbent main body by the heat welding portion (50).
