[Problem] To provide a treatment tool for endoscopic surgery which has, in an insertion part, two or more bending parts that can be independently operated to bend, and which has distal forceps pieces that can be opened and closed, and rotated. [Solution] A treatment tool for endoscopic surgery comprising an insertion part provided on one end of a pipe-shaped main body and an operation part provided on another end, wherein: the insertion part has two or more bending parts and a pair of forceps pieces the operation part has a bending operation part that correspond to each of the bending parts, an open and close operation part, and a rotation operation part the bending parts can be operated to bend by operating a first wire member connected to the bending operation part to move back and forth inside the main body in an axial direction the forceps pieces can be operated to open and close by operating a second wire member connected to the open and close operation part to move back and forth inside the main body in an axial direction and the forceps pieces can be operated to rotate by operating a third wire member connected to the rotation operation part to rotate about the axis inside the main body.Linvention fournit un instrument de traitement pour chirurgie endoscopique qui possède deux parties courbes ou plus permettant une manipulation en courbe de manière indépendante au niveau dune partie insertion, et qui présente en son extrémité avant une pièce forceps dont louverture/fermeture et la rotation sont libres. Plus précisément, linvention concerne un instrument de traitement destiné à la chirurgie endoscopique, qui est caractéristique en ce quil est équipé dune partie insertion agencée à une extrémité dun corps principal en forme de tube, et dune partie manipulation agencée à son autre extrémité. Ladite partie insertion possède les deux parties courbes ou plus et une paire de pièces forceps. Ladite partie manipulation possède des parties manipulation en courbe corres
