A refrigerator comprising: a cabinet defining a storage space; a door opening and closing the cabinet; an outer plate defining an outer appearance of the door and having an opening therethrough; and a transparent display assembly which covers the opening of the outer plate and through which an inner space of the refrigerator is seen, wherein the transparent display assembly comprises: a front panel defining a front surface of the door; a rear panel defining a rear surface of the door; an outer spacer maintaining a distance between the front panel and the rear panel and disposed along circumferences of the front panel and the rear panel to define a sealed space therein; a display disposed on a rear surface of the front panel, characterized in that the transparent display assembly further comprises: an insulation panel provided between the display and the rear panel; an inner spacer disposed on a rear surface of the insulation panel to maintain a distance between the insulation panel and the rear panel; a plurality of first cables (601, 605, 606) electrically connected to the display and guided to the outside of the outer spacer through between the rear panel and the outer spacer; and a docking printed circuit board, PCB, provided on an upper portion of the door, the docking PCB being connected to the plurality of first cables (601, 605, 606), the display, the insulation panel and the inner spacer are disposed in the sealed space of the outer spacer between the front panel and the rear panel, the refrigerator further comprises: a control unit located at the cabinet and configured to control operation of the refrigerator; and at least one second cable configured to connect the docking PCB to the control unit, wherein the number of the at least one second cable is less than that of the plurality of first cables (601, 605, 606), wherein the first cable (601, 605, 606) includes a flexible film type cable and the second cable includes a wire type cable. a front panel defining a front surface of the door; a rear panel defining a rear surface of the door; an outer spacer maintaining a distance between the front panel and the rear panel and disposed along circumferences of the front panel and the rear panel to define a sealed space therein; a display disposed on a rear surface of the front panel, the transparent display assembly further comprises: an insulation panel provided between the display and the rear panel; an inner spacer disposed on a rear surface of the insulation panel to maintain a distance between the insulation panel and the rear panel; a plurality of first cables (601, 605, 606) electrically connected to the display and guided to the outside of the outer spacer through between the rear panel and the outer spacer; and a docking printed circuit board, PCB, provided on an upper portion of the door, the docking PCB being connected to the plurality of first cables (601, 605, 606), an insulation panel provided between the display and the rear panel; an inner spacer disposed on a rear surface of the insulation panel to maintain a distance between the insulation panel and the rear panel; a plurality of first cables (601, 605, 606) electrically connected to the display and guided to the outside of the outer spacer through between the rear panel and the outer spacer; and a docking printed circuit board, PCB, provided on an upper portion of the door, the docking PCB being connected to the plurality of first cables (601, 605, 606), the display, the insulation panel and the inner spacer are disposed in the sealed space of the outer spacer between the front panel and the rear panel, the refrigerator further comprises: a control unit located at the cabinet and configured to control operation of the refrigerator; and at least one second cable configured to connect the docking PCB to the control unit, a control unit located at the cabinet and configured to control operation of the refrigerator; and at least one second cable configured to connect the docking PCB to the control unit, wherein the number of the at least one second cable is less than that of the plurality of first cables (601, 605, 606), wherein the first cable (601, 605, 606) includes a flexible film type cable and the second cable includes a wire type cable.