A sanitary napkin includes: a substrate having a base layer and an absorbent body mounted on the base layer, and defining a longitudinal direction (X) and a width direction (Y) perpendicular to the longitudinal direction (X) and at least one absorbing unit including a plurality of connecting portions connected to the absorbent body and spaced apart among one another in the longitudinal direction (X), an absorbing portion extending in the longitudinal direction (X) and connected to the connecting portions, and a plurality of cotton fluffs disposed on the absorbing portion. The absorbent body, the connecting portions and the absorbing portion cooperatively define a plurality of aerated channels extending in the width direction (Y).