Disclosed is a water-absorbable sheet structure in which a water-absorbing layer comprising water-absorbable resins (A) and (B) is sandwiched between fibrous webs from the top surface side and the lower surface side of the water-absorbing layer, wherein the water-absorbable sheet structure is characterized in that the total content of the water-absorbable resins (A) and (B) is 100 to 1000 g/m