A water-absorbent resin composition having an antimicrobial property, which suppresses the generation of dust of the antimicrobial agent. A water-absorbent resin composition comprising a water-absorbent resin and an antimicrobial agent comprising an inorganic compound carrying an antimicrobial metal, the water-absorbent resin composition being characterized in that the degree of generated dust of the water-absorbent resin composition is at most 100 CPM. The water-absorbent materials such as disposable diaper, sanitary napkin and incontinence pad； urine-absorbent materials for pets； materials for civil engineering and construction such as packing materials； drip absorbents； food freshness retaining materials such as cold-reserving agents； horticultural articles such as water-retaining materials for soils； and the like.
