An object of the present invention is to provide an endoscope flexible tube capable of ensuring a large internal space while maintaining ease of assembly, and therefore the endoscope flexible tube of the present invention is characterized in that the strip-, An inner tubular member 14 disposed inside the end portion 21 of the spiral tube, and a spiral tube 11 disposed outside the end portion of the spiral tube and spirally disposed between the spiral tube and the inner tubular member And an outer tubular member 15 for clamping the end portion of the tube, wherein the inner tubular member is formed in a spiral shape such that the diameter D1A of the end portion of the helical tube is larger than the diameter D1 of the portion different from the end portion of the spiral tube And is arranged inside the end of the tube.本発明は、組み立て性を維持しつつ大きな内部空間を確保し得る内視鏡可撓管を提供することを目的とし、そのために、本発明の内視鏡可撓管は、帯状板を螺旋状に巻回して構成された螺旋管11と、螺旋管の端部21の内側に配置された内側筒状部材14と、螺旋管の端部の外側に配置され内側筒状部材との間に螺旋管の端部を挟持する外側筒状部材15とを具備し、内側筒状部材は螺旋管の端部の径D1Aを螺旋管の端部とは異なる部分の径D1よりも大きくするように螺旋管の端部の内側に配置された構成を有する。
