PROBLEM TO BE SOLVED: To provide a flexible part structure that can make a flexible part have a tendency to bend and the flexible part (semi-hard part) that can have the tendency to bend.SOLUTION: An endoscope has a flexible part structure in which a flexible part of an insertion part includes a metal strand cylindrical body that is formed in a cylindrical shape by winding metal strands in a plurality of layers and has overlapping parts of the wound metal strands. In the overlapping parts, the metal strands are joined each other by diffusion bounding.
