PROBLEM TO BE SOLVED: To provide an endoscope cap or the like which can be easily attached to and detached from the tip of an endoscope. An endoscope includes a tip portion 31 arranged at the tip of an insertion portion, and an endoscope cap that is removable from the tip portion 31 and has a bottomed tubular cover. When the endoscope cap is attached to the tip portion, cavities 93 and 94 are formed between the inner surface of the tubular portion of the endoscope cap and the tip portion, and the tip portion is formed. When the position corresponding to the cavity is pressed with the endoscope cap attached to 31, the endoscope cap is deformed. [Selection diagram] FIG. 20【課題】内視鏡先端への着脱が容易な内視鏡用キャップ等を提供すること。【解決手段】内視鏡は、挿入部の先端に配置された先端部３１と、前記先端部３１に着脱可能であり、有底筒型のカバーを備える内視鏡用キャップとを備え、前記先端部に前記内視鏡用キャップが取り付けられた場合に、前記内視鏡用キャップの筒部の内面と、前記先端部との間に空洞部９３、９４が形成されており、前記先端部３１に前記内視鏡用キャップが取り付けられた状態で、前記空洞部に対応する場所を押圧した場合に、前記内視鏡用キャップが変形する。【選択図】図２０
