It is intended to provide an absorbent article provided with a composite sheet which comprises a film sheet and a fiber mass and is excellent in the ability to draw in a liquid and the ability to prevent the backward flow. Namely, an absorbent article provided with a composite sheet comprising a film sheet having multiple pores formed therein and a fiber mass laminated on one side of the film sheet, wherein the fiber mass has a projected section in which a part of the fiber mass projects through the multiple pores toward the other side of the film sheet.