A washing machine comprising: a cabinet configured to form an exterior and having an opening, at a front side, through which laundry is introduced; a first electrical component provided inside the cabinet; a door provided with a second electrical component and configured to open and close the opening; a hinge configured to pivotably couple the door to the cabinet; and a wire extending from an inside of the cabinet to the door to electrically connect the first electrical component and the second electrical component, wherein the hinge comprises: a hinge body coupled to the cabinet, a hinge arm extending from the hinge body, a protrusion protruding from the hinge arm in a rotating axis direction to form a rotating axis of the door and having an incised portion, a wire guide portion Z formed at the hinge arm and configured to accommodate the wire along the protrusion and the hinge arm, a hinge cover detachably coupled to the wire guide portion to prevent the wire accommodated in the wire guide portion from being exposed to the outside, wherein one end portion of the hinge cover is coupled to the incised portion to form a wire inlet communicating with the wire guide portion and to allow the wire to enter the wire guide portion, and a fixing ring to couple the protrusion and the end portion of the hinge cover. a cabinet configured to form an exterior and having an opening, at a front side, through which laundry is introduced; a first electrical component provided inside the cabinet; a door provided with a second electrical component and configured to open and close the opening; a hinge configured to pivotably couple the door to the cabinet; and a wire extending from an inside of the cabinet to the door to electrically connect the first electrical component and the second electrical component, wherein the hinge comprises: a hinge body coupled to the cabinet, a hinge arm extending from the hinge body, a protrusion protruding from the hinge arm in a rotating axis direction to form a rotating axis of the door and having an incised portion, a wire guide portion Z formed at the hinge arm and configured to accommodate the wire along the protrusion and the hinge arm, a hinge cover detachably coupled to the wire guide portion to prevent the wire accommodated in the wire guide portion from being exposed to the outside, wherein one end portion of the hinge cover is coupled to the incised portion to form a wire inlet communicating with the wire guide portion and to allow the wire to enter the wire guide portion, and a fixing ring to couple the protrusion and the end portion of the hinge cover. a hinge body coupled to the cabinet, a hinge arm extending from the hinge body, a protrusion protruding from the hinge arm in a rotating axis direction to form a rotating axis of the door and having an incised portion, a wire guide portion Z formed at the hinge arm and configured to accommodate the wire along the protrusion and the hinge arm, a hinge cover detachably coupled to the wire guide portion to prevent the wire accommodated in the wire guide portion from being exposed to the outside, wherein one end portion of the hinge cover is coupled to the incised portion to form a wire inlet communicating with the wire guide portion and to allow the wire to enter the wire guide portion, and a fixing ring to couple the protrusion and the end portion of the hinge cover.