A refrigerator of the present embodiment comprises: a cabinet having a storage space; a refrigerator door that is rotatably connected to the cabinet by means of a hinge device and opens and closes the storage space; an extension member that is drawn out from the cabinet and connected to the inside of the refrigerator door through a door opening spaced apart from the rotation center of the refrigerator door and includes at least one of a wire and a tube through which a liquid flows; a guide housing that guides the extension member positioned on the outside of the cabinet and the refrigerator door and includes a plurality of individual housings rotatably connected to each other; and a door fixing unit that rotatably connects a first housing among the plurality of individual housings to the refrigerator door.