endoscope aid, the hood 31, the insertion portion of the endoscope 1 It is provided on two of the tip along the axial direction of the insertion portion 2, a hood cover 42 for movably holding the hood 31, and a wire fixing portion 24. Wire fixing portion 24, causes the project and retract the front end portion 2A of the hood 31 along and in the axial direction of the insertion portion 2 is parallel to the axis of the hood 31, with the hood 31 is projected distally of the distal end portion 2A, When the hood 31 is subjected to force in the proximal direction, to fix the wire 23 to generate a regression force to return to a state of being protruded to the hood 31.内視鏡補助具は、フード31と、内視鏡1の挿入部2の先端部に設けられ、挿入部2の軸方向に沿って、フード31を移動可能に保持するフードカバー42と、ワイヤ固定部24とを有する。ワイヤ固定部24は、フード31の軸に平行でかつ挿入部2の軸方向に沿ってフード31を先端部2Aにおいて突没させると共に、フード31が先端部2Aの先端方向に突出した状態で、フード31が基端方向に力を受けたときに、フード31を突出した状態に回帰させる回帰力を発生させるワイヤ23を固定する。
