<;P>;PROBLEM TO BE SOLVED: To enable those wearing sterile gloves on their hands, etc., to very easily and securely connect a clip with a connection hook at the distal end of an endoscope even for those unskilled in this work. <;P>;SOLUTION: The clip fitting tool includes an arm part 11 in the shape of nearly a letter V, a clip 10 storage part 6 having the connection part 11a detachably connected with a connection hook 21 at the tip of the treatment instrument 20 of an endoscope and a guide part. The guide part includes a hook guide hole 8 in a cross-section shape that gradually becomes flat from the rear opening part 8a toward the boundary with a front storage part 6 so as to change the orientation of the inserted connection hook 21 into one suitable to fix with or detach from the connection part 11a. In the storage part 6, formed is a projection 14 to fix the stored clip 10 at a prescribed position in the shape of nearly the letter V. <;P>;COPYRIGHT: (C)2009,JPO&INPIT