PROBLEM TO BE SOLVED: To provide an endoscope in which a unit including a treatment instrument raising base can be easily attached. SOLUTION: An endoscope has an insertion part at least a part of one end side of which is inserted into the body of a subject, and a treatment instrument insertion port which is provided on the other end side of the insertion part and into which a treatment instrument is inserted. An endoscope main body provided with a formed operation part, and a treatment tool raising base that is located at the one end of the insertion part and raises the treatment tool inserted from the treatment tool insertion port, A linear member connected to the other end side of the treatment instrument raising base, a tubular treatment instrument channel into which the linear member and the treatment instrument are inserted, and the other end side of the linear member. And a treatment instrument channel unit that includes a slide member that raises the treatment instrument raising base by sliding in response to an operation on the operation portion, and the treatment instrument channel unit includes It can be attached to and detached from the endoscope body. [Selection diagram] Fig. 3【課題】処置具起上台を含むユニットの取り付けが容易な内視鏡を提供すること。【解決手段】内視鏡は、一端側の少なくとも一部が被検体の体内に挿入される挿入部と、前記挿入部の他端側に設けられ、処置具が挿入される処置具挿入口が形成された操作部と、を備えた内視鏡本体と、前記挿入部の前記一端に位置しており、前記処置具挿入口から挿入された処置具を起上させる処置具起上台と、前記処置具起上台の前記他端側に接続されている線状部材と、前記線状部材と処置具とが内部に挿通されるチューブ状の処置具チャンネルと、前記線状部材の前記他端側に接続されており、前記操作部に対する操作に応じてスライドすることにより前記処置具起上台を起上させるスライド部材と、を備えた処置具チャンネルユニットと、を有し、前記処置具チャンネルユニットが前記内視鏡本体に対して着脱可能である。【選択図】図３
