The endoscope attachment includes a tubular main body having a base end portion attachable to an insertion portion of the endoscope, a tubular main body provided in the main body on the proximal end side of the distal end surface of the main body, And a partition portion having a communicating portion for allowing the fluid to move in a fluid communication manner between the proximal end side and the distal end side of the main body.この内視鏡用アタッチメントは、内視鏡の挿入部に取付け可能な基端部を有する筒状の本体と、前記本体の先端面よりも前記基端部側の前記本体内に設けられ、前記本体の基端側と先端側とを流体が移動可能に連通させる連通部を有する仕切り部と、を備える。
