To provide an absorbent article which is less likely to cause leakage on a crotch region and which easily flows a body fluid in a longitudinal direction of an absorbent core.SOLUTION: An absorbent article 1 is configured so that, an absorbent core 9 has first and second layers 17, 19 which are adjacent in a thickness direction T, the first layer 17 comprises (i) a groove part 25 extending along a longitudinal direction L, penetrating in a thickness direction T and having a terminal 27 on a rear position RD, and (ii) a base part 29 adjacent to the rear position RD of the groove part 25 sandwiching the terminal 27 therebetween, the groove part 25 and the base part being arranged in a front bodice FP. The second layer 19 has a groove corresponding part 33 and a base corresponding part 35 on a position overlapped to the groove part 25 and the base part 29 in the thickness direction T. An average density of high absorbent polymer particles 23 included in the base part 29 and an average density of high absorbent polymer particles 23 included in the base part corresponding part 35, are higher than that of the high absorbent polymer particles 23 included in the groove part corresponding part 33, in the absorbent article 1.SELECTED DRAWING: Figure 5【課題】体液を吸収コアの長手方向に流しやすく且つ股間領域において漏れを生じさせにくい吸収性物品を提供すること。【解決手段】吸収性物品１であって、吸収コア９が、厚さ方向Ｔにお互いに隣接する第１層１７及び第２層１９を備え、第１層１７が、前身頃ＦＰに配置された、（ｉ）長手方向Ｌに沿って延在する溝部２５であって、厚さ方向Ｔに貫通しており且つ後方ＲＤの位置に終端２７を備えている溝部２５と、（ｉｉ）終端２７を間に挟んで、溝部２５の後方ＲＤの位置に隣接して配置されている基部２９とを備え、第２層１９が、溝部２５及び基部２９と厚さ方向Ｔに重複する位置に、それぞれ、溝部対応部３３及び基部対応部３５を備え、基部２９に含まれる高吸収性ポリマー粒子２３の平均密度と、基部対応部３５に含まれる高吸収性ポリマー粒子２３の平均密度とが、溝部対応部３３に含まれる高吸収性ポリマー粒子２３の平均密度よりも高いことを特徴とする吸収性物品１。【選択図】図５
