An endoscope (10) includes a flexible tube (26) having a helical tube (62) in which a thin strip plate is helically wound, a braid tube (64) covering the outside of the helical tube, and a flexible outer tube (66) covering the outside of the braid tube, a connection mouth ring (100, 70) plastically deformed and fixed to an end of the flexible tube, and a helical tube displacement preventing portion (W) which prevents displacement of the strip plate of the helical tube at the end of the flexible tube to which the connection mouth ring is fixed, when the connection mouth ring is fixed to the end of the flexible tube.
