A sanitary napkin includes an absorbent body, anda flow-guide unit including two flow-guide membershaving bottom ends connected to a top surface of theabsorbent body, and a pull piece connected to top endsof the flow-guide members. Each flow-guide memberincludes a plurality of flow-guide sections, and aplurality of outer junction sections each formedbetween outer ends of two adjacent ones of theflow-guide sections. The pull piece is pulled to movethe flow-guide sections relative to the absorbent bodyfrom a folded position, in which the flow-guidesections are stacked one upon the other, to an extendedposition, in which the outer junction sections of theflow-guide members are spaced apart from each other.