PROBLEM TO BE SOLVED: To provide a hydrolyzable absorber, excellent in moisture permeability and intensity during use, and clogging piping with a hydrolyzate after disposal, less likely to occur.SOLUTION: A hydrolyzable absorber (4) comprises: a hydrolyzable absorption layer (41) and a non-water soluble resin layer (42) having moisture permeability. Tension breaking strength of the non-water soluble resin layer (42) in a plane direction, is 17-45 N/25 mm in a first direction, and 3-7 N/25 mm in a second direction orthogonal to the first direction.SELECTED DRAWING: Figure 3