The absorbent layer comprising a water absorbent resin and an adhesive is a water absorbent sheet structure having a structure in which a nonwoven fabric is sandwiched from above and below the absorbent layer, and the water absorbent resin content is 100 to 1000 g. / M2, the weight average particle size of the water absorbent resin is 50 to 800 μm, the particle size rate index of the water absorbent resin is 0.12 sec / μm or less, and the peel strength of the water absorbent sheet structure is 0.05 to 3 A water-absorbent sheet structure of 0.0 N / 7 cm. Even if the water-absorbent sheet structure according to the present invention is thin, it has good shape retention, so that it does not lose its shape before or after liquid absorption, and has liquid permeability, a small amount of liquid reversion, and a small amount during tilting. There is an excellent effect that the absorption ability such as liquid leakage can be sufficiently exhibited.吸水性樹脂及び接着剤を含有してなる吸収層が、不織布により当該吸収層の上方及び下方から挟持された構造を有する吸水シート構成体であって、当該吸水性樹脂の含有量が１００～１０００ｇ／ｍ2、当該吸水性樹脂の質量平均粒径が５０～８００μｍ、かつ当該吸水性樹脂の粒径速度指数が０．１２秒／μｍ以下、吸水シート構成体の剥離強度が、０．０５～３．０Ｎ／７ｃｍである吸水シート構成体。本発明にかかる吸水シート構成体は、薄型であっても、形態保持性が良好なために、液体吸収前や吸収後に型くずれを起こさず、しかも液体浸透性、少ない液体逆戻り量、傾斜時の少ない液漏れ等の吸収能力を十分に発揮することができるという優れた効果を奏する。
