An endoscope flexible tube according to the present invention includes: a spiral tube configured such that a belt-like plate is spirally wound an inner cylindrical member disposed inside an end part of the spiral tube and an outer cylindrical member that is disposed outside the end part of the spiral tube, and holds the end part of the spiral tube between the inner cylindrical member and the outer cylindrical member. The inner cylindrical member has an outer diameter that is set larger than an inner diameter of the spiral tube, and the end part of the spiral tube is deformed to enlarge the inner diameter of the end part, and is externally fitted to the inner cylindrical member.
