The present invention provides a water-absorbing sheet suitable for a hygienic material such as a disposable diaper. The water-absorbing sheet in accordance with an aspect of the present invention includes: a first base material； a second base material； and a particulate water-absorbing agent sandwiched between the first base material and the second base material, at least one of the first base material and the second base material being a water-permeable base material, and at least part of the particulate water-absorbing agent satisfying the following physical properties (1), (2), and (3):(1) a centrifuge retention capacity (CRC) is 30 g/g to 50 g/g；(2) a mass average particle diameter (D50) is 200 µm to 600 µm； and(3) a DRC index defined by the following Formula (a) is 43 or less:DRCindex=49−DRC5min/D50/1000
