The purpose of the present disclosure is to provide an absorbent article in which bodily fluid easily flows in the longitudinal direction of an absorbent core and leakage at a crotch region is suppressed. An absorbent article according to the present disclosure has the following configuration. An absorbent article (1) is characterized in that: an absorbent core (9) includes a first layer (17) and a second layer (19) that are adjacent to each other in the thickness direction (T)； the first layer (17) has, in a front-body part (FP), (i) a groove (25) extending in the longitudinal direction (L), penetrating in the thickness direction (T), and having a terminal end (27) at a rear (RD) position and (ii) a base (29) disposed adjacent to the rear (RD) position of the groove (25) with the terminal end (27) therebetween； the second layer (19) has a groove corresponding part (33) and a base corresponding part (35) at positions overlapping the groove (25) and the base (29) respectively in the thickness direction (T)； and the average density of highly absorbent polymer particles (23) contained in the base (29) and the average density of the highly absorbent polymer particles (23) contained in the base corresponding part (35) are higher than the average density of the highly absorbent polymer particles (23) contained in the groove corresponding part (33).本發明的目的是提供一種吸收性物品，容易將體液朝吸收芯的長度方向流動且在股間領域不易產生漏出。本發明的吸收性物品，是具有以下的構成。一種吸收性物品(1)，吸收芯(9)，是具備在厚度方向(T)彼此相鄰接的第1層(17)及第2層(19)；第1層(17)，是具備被配置於前身體(FP)的，(i)沿著長度方向(L)延伸且朝厚度方向(T)貫通且在後方(RD)的位置具備末端(27)的溝部(25)、及(ii)將末端(27)挾持在其間且鄰接配置於溝部(25)的後方(RD)的位置的基部(29)；第2層(19)，是在與溝部(25)及基部(29)在厚度方向(T)重複的位置各別具備溝部對應部(33)及基部對應部(35)；被包含於基部(29)的高吸收性聚合物粒子(23)的平均密度、及被包含於基部對應部(35)的高吸收性聚合物粒子(23)的平均密度，是比被包含於溝部對應部(33)的高吸收性聚合物粒子(23)的平均密度更高。
