A sanitary pad comprises an absorbent layer defining a longitudinal direction and a width direction perpendicular to each other, and a flow guiding unit made of a soft and water-absorbent material. The flow guiding unit comprises a flow guiding mechanism, a lifting mechanism which is integrally extended backwardly from the flow guiding mechanism, and at least one positioning and air permeable mechanism formed to the flow guiding mechanism. The positioning and air permeable mechanism has a perforation formed to the flow guiding mechanism, and an auxiliary connecting member connecting the flow guiding mechanism and the absorbent layer. Using the lifting mechanism and the auxiliary connecting member, the positioning effect of the flow guiding mechanism can be enhanced, and the perforation of the positioning and air permeable mechanism formed to the flow guiding mechanism can improve the air permeability and avoid the generation of sweltering feeling.一種衛生棉包含一個定義有相互垂直的一長度方向與一寬度方向的吸收層,及一以柔軟且具吸水性之材質製成的導流單元。該導流單元包括一導流機構、一由該導流機構一體向後延伸的拉提機構,及至少一形成於該導流機構的定位透氣機構。該定位透氣機構具有一形成於該導流機構的穿孔,及一連接該導流機構與該吸收層的輔助連接件。利用該拉提機構以及該輔助連接件,可以提升該導流機構的定位效果,而形成於該導流機構的定位透氣機構的穿孔,則可以改善透氣性避免悶熱感的產生。3‧‧‧衛生棉4‧‧‧吸收層5‧‧‧導流單元51‧‧‧導流機構511‧‧‧前端部512‧‧‧本體部513‧‧‧導流部52‧‧‧拉提機構53‧‧‧定位透氣機構531‧‧‧穿孔532‧‧‧輔助連接件533‧‧‧第一連接端X‧‧‧長度方向Y‧‧‧寬度方向