PROBLEM TO BE SOLVED: To provide a treatment device for used sanitary articles, which can sufficiently dip a used paper diaper into each material even if it is a pants-type used paper diaper. To provide a separator for SOLUTION: A separator 3 for a used sanitary article processing device according to the present invention is a scraper that scrapes up a used hygiene article 2 that has been put into an inner shell separation tank 7 by rotating it on an inner wall 7a of the inner shell separation tank 7. The raising projection 39 is provided so as to project along the rotation axis direction of the inner case separation tank 7 and toward the rotation axis direction of the inner case separation tank 7, and the scraping projection 39 is put into the inner case separation tank 7 for use. A crushing blade portion 42 capable of crushing the used sanitary article 2 is provided. [Selection] Fig. 3【課題】本発明は、パンツ型の使用済み紙おむつであっても、処理液に充分に浸漬させることができて使用済み紙おむつを素材ごとに確実に分離することができる使用済み衛生用品の処理装置用分離機を提供する。【解決手段】本発明の使用済み衛生用品の処理装置用分離機3は、内胴分離槽7の内壁7aに内胴分離槽7内に投入された使用済み衛生用品2を回転によって掻き上げる掻き上げ突起39を、内胴分離槽7の回転軸方向に沿うとともに内胴分離槽7の回転軸方向に向かって突出して設け、掻き上げ突起39に、内胴分離槽7内に投入された使用済み衛生用品2を破砕可能な破砕刃部42を設けた。【選択図】 図3