A spout (4) that is attached to a pouch-like bag and through which the contents filled in the bag are discharged, the spout includes: a tubular portion (49) in which a through hole (12) is formed and from a leading end of which the contents are discharged; and a rib (20) that extends from the inner circumferential surface of the tubular portion (9) towards the central axis side (13) of the through hole (12). A hole (21) surrounded by the edge of the extended rib (20) is formed in the part where the rib (20) is formed. This configuration makes it easy to secure the strength of the rib (20) and is advantageous in preventing breakage and deformation of the rib (20). Thus, accidental insertion of connecting needles can be prevented with more certainty.