A water disintegrable cleaning utensil of the present invention has: a cleaning part, at least part of which is formed by a wet shrinkable resin being hydrophilic and shrinkable at least in one direction when absorbing water; and a holding part which holds the cleaning part. By this structure, the water disintegrable cleaning utensil is very effective at cleaning both in a dry and in a wet condition and is disintegrable in water when being disposed of after being used.