A sanitary napkin (3) includes a main pad body (4) having an absorbent body (43), and a flow-guide unit (5) including two flow-guide members (51) having bottom ends connected to a top surface of the absorbent body (43), and a pull piece (52) connected to top ends of the flow-guide members (51). Each flow-guide member (51) includes a plurality of flow-guide sections (511) foldably connected to each other, and a plurality of outer junction sections (513) each formed between outer ends of two adjacent ones of the flow-guide sections (511). The pull piece (51) is pulled to move the flow-guide sections (511) relative to the absorbent body (43) from a folded position, in which the flow-guide sections (511) are stacked one upon the other, to an extended position, in which the outer junction sections (513) of the f low-guide members (51) are spaced apart from each other.
