The endoscope 1 includes an endoscope operation portion 3 having a bending operation lever 4 and a treatment instrument insertion opening 5 provided on a proximal end side of an endoscope insertion portion 2 having a bending portion 2B, and a bending operation lever 3 A first gripping portion 6 located at the distal end side for gripping the endoscope operating portion 3 in a first gripped state and a second gripping portion 6 extending to the proximal end side of the bending operation lever 4 and having an endoscope operating portion 3 A second gripping portion 7 for gripping the gripping portions 6 and 7 in a second gripping state and a second gripping portion 7 for gripping the gripping portions 6 and 7 respectively formed on the first gripping portion 6 and the second gripping portion 7 And a mounting portion mounting portion 10 to which the mounting portion 54 of the treatment instrument operating portion 52 is attached so that the operation of the bending operation lever 4 and the operation of the slider 53 included in the treatment instrument 50 can be performed with the finger of the fingers.内視鏡1は、湾曲部2Bを有する内視鏡挿入部2の基端側に設けられた湾曲操作レバー4および処置具挿入口5を有する内視鏡操作部3と、湾曲操作レバー4よりも先端側に位置して内視鏡操作部3を第1の把持状態で把持するための第1の把持部6と、湾曲操作レバー4の基端側に延設され内視鏡操作部3を第2の把持状態で把持するための第2の把持部7と、第1の把持部6及び第2の把持部7にそれぞれ形成されている、把持部6、7を把持している手の指で湾曲操作レバー4の操作と処置具50が備えるスライダ53の操作とを行えるように処置具操作部52の取付部54が取り付けられる、取付部装着部10と、を具備する。
