A water-absorbent sheet structure comprises a structure in which an absorbent layer containing a water-absorbent resin and an adhesive is sandwiched with nonwoven fabrics from an upper side and a lower side of the absorbent layer, wherein the water-absorbent resin is contained in an amount of from 100 to 1,000 g/m 2 , and wherein the water-absorbent resin has a water-retention capacity of saline solution of from 15 to 50 g/g, and wherein the water-absorbent sheet structure has a peeling strength of from 0.05 to 3.0 N/7 cm. The water-absorbent sheet structure of the present invention exhibits some effects that a water-absorbent sheet structure has excellent shape retaining ability even when the structure is thin, so that the water-absorbent sheet structure does not undergo deformation of the form before liquid absorption or after the absorption, and is capable of sufficiently exhibiting absorbent properties.一種吸水片材結構體，其係具有包含吸水性樹脂及接著劑而成之吸收層由不織布自該吸收層之上方及下方夾持之構造者，且該吸水性樹脂之含量為100~1000 g/m2，該吸水性樹脂之生理鹽水保水能力為15~50 g/g，該吸水片材結構體之剝離強度為0.05~3.0 N/7 cm。本發明之吸水片材結構體即便為薄型，因形態保持性良好，亦發揮如下之優良效果：於液體吸收前及吸收後不會發生形變，並且能充分地發揮吸收能力。
