Problem to be solved: to provide an endoscope capable of making the wire between the operation unit and the top of the wire to a predetermined length, and can correctly install the wire and the mount.The endoscope 1 is an insertion part 5, a direction changing member for changing the direction of the tip of the treatment tool T, an operating part 4, a long member for operating a direction changing member, a moving part 21 provided in the operation part 4, and a moving part 21 arranged along the long member, and an operation lever for moving the moving part 21 in the axial direction It has a fixed mechanism 51 for fixing the long member to the moving portion 21 so as not to move to the retracting direction L, and releasing the fixing member when the long member moves in the approach direction e.Diagram【課題】 より確実に、操作部と起上台間のワイヤを所定の長さにすることができ、ワイヤ及び起上台を正しく取り付けることができる内視鏡を提供する。【解決手段】 内視鏡1は、挿入部5と、処置具Tの先端部の向きを変える方向変更部材と、操作部4と、方向変更部材を動作させる長尺部材と、操作部4に設けられ、長尺部材に沿って配置された移動部21と、移動部21を軸線方向へ移動させる操作レバー11と、退出方向Lへ移動しないように長尺部材を移動部21に固定し、進入方向Eへ長尺部材が移動すると固定を解除する、固定機構51と、を有する。【選択図】図3