To obtain a fiber structure having both water absorption and water evaporation properties that has the functions of absorbing dew water formed by condensation of water vapor in the air and of evaporating the absorbed water and can be suitably used as a sheet that can evaporate dew condensation water, a water absorption sheet, a moisture-controlling plate, a water evaporation plate and the like.

This fiber structure contains ≥30 wt.% of fiber with a specific surface area of ≥0.4 m2/g and has a bulk density of ≥0.1 g/cm3, a unit weight of ≥30 g/m2, an absorption height of ≥200 mm, an absorption up rate of ≥40 mm/60 sec, and a water evaporation rate of 90 g/m2hr. Further, a fiber structure acting as a water absorption and evaporation layer and another fiber structure acting as a water retention layer are laminated to give an objective fiber structure having the water absorption and evaporation properties with a unit weight of ≥50 g/m2, a water absorption height of ≥200 mm, a water absorption up rate of ≥40 mm/60 sec, an evaporation rate of ≥90 g/m2 and a water retention of ≥500%.