The cover detaching jig of the endoscope has a front end cover having a locking portion to be attached to a distal end constituting portion provided at the distal end of the insertion portion, and a surrounding portion formed of a fitting hole fitted so as to cover the front end cover Section. The projecting portion projects into the enclosing portion and has a protruding portion contacting a part of the edge of the opening portion of the front end cover and capable of being pressed in the circumferential direction when the front end cover is fitted into the enclosing portion so as to be fitted therein, The edge is pressed and plastically deformed and destroyed, and the locking by the locking portion is canceled.内視鏡のカバー取り外し治具は、挿入部の先端に設けられる先端構成部に装着される係止部を有する先端カバーに対して、先端カバーを覆うように嵌合する嵌合穴からなる包囲部を備えている。包囲部内に張り出し、先端カバーが内部に突き当てられて嵌め込まれた際に、先端カバーの開口部の縁の一部に接触し周方向に押圧可能な突起部を有し、回転により開口部の縁を押圧して塑性変形させて破壊し、係止部による係止を解除する。
