An object of the present invention is to improve the adhesion between a body fluid discharge part in the crotch and the starting position of a buttocks groove, thereby preventing body fluid from leaking and facilitating the transmission of pressure from both sides in the width direction to the central part. SOLUTION: A pair of left and right squeezing grooves 8 along a substantially longitudinal direction are formed on the surface side of a liquid-permeable top sheet 3. The compressed groove 8 has a separation width reduction region 11 in which a separation width on the left and right sides is narrowed behind a portion corresponding to the body fluid discharge portion H of the wearer, and the inside of the separation width reduction region 11 and on the left and right sides. In the portion where the separation width of the pressing grooves 8 and 8 is minimized, a rapidly expanding portion 10 is formed in which the groove width of the pressing groove 8 is rapidly expanded. [Selection] Figure 1【課題】股下の体液排出部と臀部溝の開始位置との間の密着性を向上させることにより、体液の伝い漏れを防止するとともに、幅方向両側からの圧力を中央部に伝達しやすくする。【解決手段】透液性表面シート３の面側に略長手方向に沿う左右対の圧搾溝８、８を形成する。前記圧搾溝８は、着用者の体液排出部Ｈに対応する部位の後方に、左右の離間幅を狭めた離間幅縮小領域１１が形成されるとともに、前記離間幅縮小領域１１内であって左右の圧搾溝８、８の離間幅が最小となる部分に、前記圧搾溝８の溝幅を急激に拡大させた急拡大部１０が形成されている。【選択図】図１
