PROBLEM TO BE SOLVED: To provide a bending portion for an endoscope and the endoscope which can prevent the piece fall of bending pieces without enlarging the diameter of the bending portion and raising the filling rate of a built-in object in the bending portion.SOLUTION: An endoscope 10 comprises: a first bending piece which is one bending piece of the adjacent bending pieces 62 and is formed so that a cross-sectional shape in a plane perpendicular to the axis direction is an elliptic shape, oval shape or flattened circular shape whose major axis direction or minor axis direction corresponds to a first direction； a second bending piece which is another bending piece of the adjacent bending pieces and is formed so that a cross-sectional shape in a plane perpendicular to the axis direction is a circular shape, elliptic shape, oval shape or flattened circular shape in which a length in the first direction differs from the first bending piece； and abutting portions in which a first end portion on a side facing the second bending piece in the first bending piece and a second end portion on a side facing the first bending piece in the second bending piece abut on each other, in at least two points when the bending portion is bent.SELECTED DRAWING: Figure 7【課題】湾曲部を大径化することなく、かつ湾曲部における内蔵物の充填率を上げることなく湾曲駒の駒落ちを防止することができる内視鏡の湾曲部及び内視鏡を提供する。【解決手段】内視鏡１０は、隣接する湾曲駒６２同士のいずれか一方の湾曲駒であって軸方向に垂直な面における断面形状が第１方向を長径方向又は短径方向とする楕円形状、長円形状、もしくは扁平円形状に形成される第１湾曲駒と、隣接する湾曲駒同士の他方の湾曲駒であって軸方向に垂直な面における断面形状が第１湾曲駒とは第１方向の長さが異なる円形状、楕円形状、長円形状、もしくは扁平円形状に形成される第２湾曲駒と、湾曲部が湾曲操作されたとき、第１湾曲駒における第２湾曲駒と対向する側の第１端部と第２湾曲駒における第１湾曲駒と対向する側の第２端部とが少なくとも２点で当接する当接部と、を備える。【選択図】図７
