A disposable absorbent article 10 that includes an absorbent mat 13 between a liquid permeable top sheet 11 and a liquid impermeable back sheet 12, the absorbent mat 13 including a sheet-like water absorbent layer 15 that contains water absorbent resin powders 14 but that does not contain pulp fibers therein, and fiber assembly layers 17A and 17B each of which mainly consists of the pulp fibers 16, sequentially from the side of the top sheet 11, the sheet-like water absorbent layer 15 alternately including a plurality of water absorbent resin powder existing regions 15a, in each of which the water absorbent resin powders 14 are wrapped in two non-woven fabric sheets 20 and 21, and a plurality of water absorbent resin powder non-existing regions 15b, in each of which the water absorbent resin powders 14 are not wrapped in the two non-woven fabric sheets 20 and 21, in a width direction, wherein rising flaps 18 are provided on both sides of the sheet-like water absorbent layer 15, respectively. Bottom ends 18a of the rising flaps 18 are bonded to the top sheet 11 corresponding to the water absorbent resin powder non-existing regions 15b-1 and 15b-2 located on both lateral ends of the sheet-like water absorbent layer 15, respectively.