The endoscope includes an insertion portion that at least the bending portion bendable in a vertical direction with the front end portion side, are connected to a proximal end side of the insertion portion, a first, substantially parallel to the longitudinal axis of the insertion portion of having a longitudinal axis, a first part and becomes obtain cylindrical operating part of the gripping portion to be gripped by one hand of a user and is connected to a proximal end side of the operation portion, the curved portion a second longitudinal axis extending toward the lower bending direction, a first portion of the grip portion and the tubular extension that can be a second grip portion to be gripped with one hand, the having one end and the second end, the first end portion which is provided rotatably on the operation unit, are extended upwards curving direction of the curved portion from the first end, bend the bending portion when operating is provided with a curved lever having a second end finger of one hand gripping the first grip portion or the second grip portion is disposed, the.内視鏡は、少なくとも上下方向に湾曲可能な湾曲部を先端部側に備えた挿入部と、挿入部の基端側に連設される、挿入部の長手軸に対して略平行な第1の長手軸を有し、使用者の一方の手で把持される第1の把持部の一部と成り得る筒状の操作部と、操作部の基端側に連設される、湾曲部の下湾曲方向に向って延出する第2の長手軸を有し、一方の手で把持される第1の把持部の一部及び第2の把持部と成り得る筒状の延長部と、第1端と第2端とを有し、操作部に回動可能に設けられる第1の端部、当該第1の端部から湾曲部の上湾曲方向に向かって延設され、湾曲部を湾曲操作する際には第1の把持部又は第2の把持部を把持する一方の手の手指が配置される第2の端部を有する湾曲レバーと、を具備する。
