A guide sheath includes: an elongated member extending along a longitudinal axis； a manipulation wire extending along the longitudinal axis of the elongated member so as to be capable of advancing and retracting； a bent section formed of a thermoplastic resin in a tubular shape and configured to be bent in accordance with advance or retraction of the manipulation wire； and a first hard section provided at a distal end surface of the bent section and formed by cross-linking the thermoplastic resin to which a distal end section of the manipulation wire is fixed.
