PROBLEM TO BE SOLVED: To provide a connector of which mold structure to ensure watertightness with the mouth piece is simplified by employing insert molding and which realizes cost reduction by reducing the assembly man-hours and the number of components.SOLUTION: A connector 30 comprises: a connector main body 32 conduit lines 38, 39, 45 which are arranged on a side of the connector main body 32 and to which are connected tubes through which a fluid passes a cylindrical body 40 which is provided inside the connector main body 32 and into which the conduit lines 38, 39, 45 are inserted through the side and a resin exterior body which constitutes the outside surface of the connector main body 32 and is formed by insertion mold to cover the outside surface of the cylindrical body including at least the root parts of the conduit lines 38, 39, 45 projecting from the cylindrical body 40.
