PROBLEM TO BE SOLVED: To provide a structurally-simple absorbent article such as a urine leakage pad, which hardly causes lateral leakage and which hardly come off from underwear.SOLUTION: An absorbent article includes: a body 11 which includes a liquid-permeable top sheet 2 comprising a positioning mark 21, a liquid-impermeable back sheet 4 having an adhesive layer on a surface except a skin abutting surface and having an approximately kite shape, and an absorber provided between the top sheet 2 and the back sheet 4 and flaps 5 which are provided on both the longitudinal side parts of the body, respectively, and which do not have the adhesive layer on the surface except the skin abutting surface.
