An endoscope according to one aspect of the present invention includes: an operation lever portion that is provided in an operation portion, includes an operation shaft, and is capable of adjusting a bending angle of a bending portion in conjunction with a tilting operation； and an exterior cover that is water-tightly fixed to the operation portion so as to cover an outer periphery of the operation shaft, and is formed in a stair shape in cross section, including a hardly deformed region and an easily deformed region that is formed at a predetermined angle with respect to the hardly deformed region.
