endoscope includes an insertion portion and a second curved portion provided on the base end side of the first curved portion and a first curved portion, a first bending drive mechanism, the second and a bending drive mechanism. First bending drive mechanism, the operation in which the first traction member is disposed through the inside of the second bending portion capable of bending the first bending portion, bendable operating the first bending portion is input and an input unit. Second bending drive mechanism, adding a compressive force to the second curved portion when it is towed are spaced at substantially equal intervals in the circumferential direction of the second curved portion to each other with respect to the first pulling member at least one pair of second traction member which can be operated in response to an input operation to the operation input unit.内視鏡は、第1の湾曲部と第1の湾曲部の基端側に設けられた第2の湾曲部とを有する挿入部と、第1の湾曲駆動機構と、第2の湾曲駆動機構とを有する。第1の湾曲駆動機構は、第2の湾曲部の内部を通して配設され第1の湾曲部を湾曲可能な第1の牽引部材と、第1の湾曲部を湾曲可能な操作が入力される操作入力部とを有する。第2の湾曲駆動機構は、第1の牽引部材に対して互いに第2の湾曲部の周方向に略等間隔に離間して配置され牽引されたときに第2の湾曲部に圧縮力を付加可能な少なくとも1組の第2の牽引部材を有し、操作入力部への操作の入力に応じて動作する。
