The purpose of the present invention is to provide a water absorbent article that has high water absorbency and high flexibility and, when used as a cleaning sheet, shows excellent ability to collect waste and dust even on a wet floor, etc. The method according to the present invention for manufacturing a water absorbent article (1) is characterized by comprising: an accumulating fiber process of accumulating a softness imparting layer (6) having absorbency on a surface sheet layer (5) having liquid permeability to form a sheet body (35) an embossing process of performing embossing on the sheet body (35) that is in a non-wet state to form a bulk portion formed from a plurality of uneven bodies in the sheet body (35) and a binder impregnating process of applying a binder to the sheet body (35) from outside after the embossing process and impregnating the binder Into the sheet body (35).