A lacrimal duct tube includes: a pair of tubular members that each have at one end an opening communicating with a lumen； and a connection member that connects the other ends of the tubular members. A base end part including the other end of at least one of the tubular members is tapered down toward the connection member and the base end part has an inlet/outlet port communicating with the lumen of the tubular member. A portion of the base end part constituting peripheral edge of the inlet/outlet port and the connection member are connected together.
