PROBLEM TO BE SOLVED: To provide a sheath with a cleaning tool and sheath device that can remove a foreign material attached to an endoscope treatment tool without taking the treatment tool out of an endoscope and can prevent the attachment of a foreign material inside a channel of the endoscope.SOLUTION: A sheath with a cleaning tool includes: a sheath 21 that is flexibly formed to have a long cylindrical shape of a length for enabling insertion/detachment to/from a treatment insertion channel 1a of an endoscope 1 and enables a treatment part 33 arranged at the distal end of the endoscope treatment tool 30 to be inserted to the cylindrical shape； and a sponge 21b arranged on an inner side close to the distal end of the sheath 21 so as to have contact with an outer peripheral surface of the treatment part 33.SELECTED DRAWING: Figure 3【課題】内視鏡用処置具を内視鏡から取り出さなくても、処置具に付着した異物を除去でき、内視鏡のチャネル内に異物が付着するとこを防止することができる清掃具付きシース及びシース装置の提供。【解決手段】内視鏡１の処置具挿通チャネル１ａに挿脱される長さの長尺筒状に可撓性をもって形成され、該筒状内に内視鏡用処置具３０の先端に配置された処置部３３を挿通することができるシース２１と、シース２１の先端近傍内側に、処置部３３の外周面に接するように配置されたスポンジ２１ｂと、を備える。【選択図】図３
