A digestive tract device that can reduce an indwelling-induced burden on the living body includes: a tubular portion that includes a through hole a holding portion that is provided on a proximal end side of the tubular portion, and holds the tubular portion in the living body and support portions and which are provided in the holding portion, and are in contact with a plurality of sites of the digestive organ of the living body, and support the holding portion in such a way that the holding portion can move in at least one direction of a circumferential direction and a longitudinal direction of the tubular portion.
