The present invention discloses a sanitary napkin comprising a main body with an absorption layer. The main body is provided with a three-dimensional flow guide part. The three-dimensional flow guide part includes an arched flow guide layer, a front piece and a rear piece. The flow guide layer has two side edges connected and fixed to the main body at intervals, and the maximum height from the front edge of the flow guide layer to the main body is smaller than that from the rear edge of the flow guide layer to the main body. There is a plurality of perforations defined in the upper part of the flow guide layer. The front piece is formed on the front edge of the flow guide layer, and extends frontwards. The front edge of the front piece is connected and fixed to the main body. The rear piece is formed on the rear edge of the flow guide layer, and extends backwards. The three-dimensional flow guide part is in a three-dimensional form, which can be placed in and attached to the labium minus and also can be attached to the labium majus, so as to improve the attachment, surely and rapidly absorb and guide menstrual blood, and effectively avoid menstrual blood overflow.本創作係一種衛生棉，其包含一具有吸收層的本體，該本體上設置一立體導流件，該立體導流件包含一拱形的導流層、一前片及一後片，該導流層的兩側緣係間隔地連接固定於該本體，且該導流層的前緣至該本體的最大高度小於該導流層的後緣至該本體的最大高度，該導流層的上部設置多數穿孔，該前片形成於該導流層的前緣並往前延伸，該前片的前緣連接固定於該本體，該後片形成於該導流層的後緣並往後延伸，由於該立體導流件採用立體形式，可伸入並貼附於小陰唇，以及可貼附於大陰唇，提高貼附性而確實、快速地吸收、導流經血，有效避免經血溢流。
