PROBLEM TO BE SOLVED: To provide a method for treating used sanitary articles for reducing adverse effect on environment and capable of efficiently performing separation and recovery of material such as fiber or SAP.SOLUTION: A method for treating used sanitary articles includes at least a process for macerating the sanitary article to disperse the same in water and a process for separating and recovering fiber and SAP included in the sanitary article, and, in the process for macerating the sanitary article to disperse the same in water, a crosslinking agent and an acidic substance are added.SELECTED DRAWING: Figure 1【課題】環境への悪影響が小さく、繊維やＳＡＰなど素材の分離回収を効率良く行うことができる、使用済み衛生用品の処理方法を提供する。【解決手段】使用済み衛生用品の処理方法であって、衛生用品を離解して水に分散させる工程と、衛生用品に含まれる繊維およびＳＡＰを分離回収する工程とを少なくとも含み、前記衛生用品を離解して水に分散させる工程において、架橋剤および酸性物質を加えることを特徴とする。【選択図】図１
