A washing machine comprising: a cabinet configured to form an exterior and having an opening 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 wire configured to electrically connect the first electrical component and the second electrical component; and a hinge (100,500,800,900) configured to couple the door to the cabinet to allow the door to be pivotable about a rotating axis, and wherein the hinge (100,500,800,900) comprises: a hinge body coupled to the cabinet; at least one hinge arm extending from the hinge body and at which a wire guide portion (140, 540, 840, 940) is formed; at least one protrusion protruding from the at least one hinge arm to form the rotating axis of the door, wherein the wire guide portion (140,540,840,940) is configured to guide and accommodate the wire along the at least one protrusion and the at least one hinge arm; a wire inlet formed to communicate with the wire guide portion (140, 540, 840, 940) to allow the wire to enter the wire guide portion (140, 540, 840, 940); and a hinge cover detachably coupled to the wire guide portion (140,540,840,940) to prevent the wire accommodated in the wire guide portion (140,540,840,940) from being exposed to the outside, wherein the at least one protrusion includes an incised portion, and one end portion of the hinge cover is coupled to the incised portion to form the wire inlet in association with the at least one protrusion. a cabinet configured to form an exterior and having an opening 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 wire configured to electrically connect the first electrical component and the second electrical component; and a hinge (100,500,800,900) configured to couple the door to the cabinet to allow the door to be pivotable about a rotating axis, and wherein the hinge (100,500,800,900) comprises: a hinge body coupled to the cabinet; at least one hinge arm extending from the hinge body and at which a wire guide portion (140, 540, 840, 940) is formed; at least one protrusion protruding from the at least one hinge arm to form the rotating axis of the door, wherein the wire guide portion (140,540,840,940) is configured to guide and accommodate the wire along the at least one protrusion and the at least one hinge arm; a wire inlet formed to communicate with the wire guide portion (140, 540, 840, 940) to allow the wire to enter the wire guide portion (140, 540, 840, 940); and a hinge cover detachably coupled to the wire guide portion (140,540,840,940) to prevent the wire accommodated in the wire guide portion (140,540,840,940) from being exposed to the outside, wherein the at least one protrusion includes an incised portion, and one end portion of the hinge cover is coupled to the incised portion to form the wire inlet in association with the at least one protrusion. a hinge body coupled to the cabinet; at least one hinge arm extending from the hinge body and at which a wire guide portion (140, 540, 840, 940) is formed; at least one protrusion protruding from the at least one hinge arm to form the rotating axis of the door, wherein the wire guide portion (140,540,840,940) is configured to guide and accommodate the wire along the at least one protrusion and the at least one hinge arm; a wire inlet formed to communicate with the wire guide portion (140, 540, 840, 940) to allow the wire to enter the wire guide portion (140, 540, 840, 940); and a hinge cover detachably coupled to the wire guide portion (140,540,840,940) to prevent the wire accommodated in the wire guide portion (140,540,840,940) from being exposed to the outside, wherein the at least one protrusion includes an incised portion, and one end portion of the hinge cover is coupled to the incised portion to form the wire inlet in association with the at least one protrusion.