An endoscope in which, even when a guide wire locking device is mounted, an endoscope in which an operation of a treatment tool erecting base is not limited and the treatment tool erecting base can be reliably moved is provided. An endoscope according to the present invention has an operation section 22 provided with an erecting operation lever 20； an insertion section 24 provided on a distal end side of the operation section 22； an erecting base 30 provided at a distal end part 26 of the insertion section 24； and a movable member 96 that is arranged to be exposed to outside of the operation section 22 and that moves in association with an operation of the erecting operation lever 20. The endoscope has a wire 60 that is pushed/pulled in accordance with a movement of the movable member 96 to move the erecting base 30； an attachment member 98 that is provided at a proximal end of the wire 60 and that is engaged with the movable member 96 in an attachable/detachable manner； and an interference prevention section 300 that is provided at a position of the operation section 22 on a proximal end side with respect to the movable member 96 and that prevents an interference with the movable member 96.
