A stent (1) for medical use includes: a main body (10) which includes a first rigid portion (20) formed in a tubular shape along a longitudinal axis and having a predetermined rigidity with respect to a compression force exerted in a radial direction and a second rigid portion (30) having a rigidity less than that of the first rigid portion (20), the second rigid portion (30) which is substantially coaxial with and continues to a proximal end of the first rigid portion (20), and the second rigid portion (30) which formed in a tubular shape along the longitudinal axis； and a locking member (40) which is provided at the second rigid portion (30) to be locked to a tissue and includes a base end (42) connected to the second rigid portion (30) at substantially a center position in a direction along the longitudinal axis of the second rigid portion (30) and an extension portion (41) extending from the base end (42) toward an outside of the main body (10) in a radial direction
