To provide an absorbent core comprising a gelling region and a thickening region, as well as an absorbent article containing the absorbent core. [SOLUTION MEANS] Absorbent core 1 formed from at least two layers, characterized in that the absorbent core 1 has in upper layer 2 gelling region 4 comprising a gelling agent that contains a polysaccharide capable of thickening in the presence of a polyvalent metal ion and a substance that can supply a polyvalent metal ion, and has in lower layer 3, thickening region 5 comprising a thickening agent.
