A refrigerator comprising: a cabinet defining a storage space; a door opening and closing the cabinet; and a transparent display assembly which covers an opening of the door and through which an inner space of the refrigerator is seen, wherein the transparent display assembly comprises: a front panel defining at least a portion of a front surface of the door; a rear panel defining at least a portion of 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 in the sealed space; a light guide plate spaced apart from the display to brighten up the display; and a display cable guided to the outside of the outer spacer through the space between the rear panel and the outer spacer; a first spacer supporting the light guide plate in the sealed space and maintaining a distance between the display and the light guide plate, wherein an inert gas is injected between the front panel and the light guide plate through an injection hole of the outer spacer to provide an insulation layer, characterized by an insulation panel disposed between the light guide plate and the rear panel; a fourth spacer disposed on a rear surface of the insulation panel to maintain a distance between the insulation panel and the rear panel; wherein the display, the light guide plate, the first spacer, the insulation panel and the fourth spacer are disposed in an inner region of the outer spacer between the front panel and the rear panel, and wherein the fourth spacer is adhered to the insulation panel and the rear panel by adhesion members configured to provide an insulation space that is in a sealed state. a cabinet defining a storage space; a door opening and closing the cabinet; and a transparent display assembly which covers an opening of the door and through which an inner space of the refrigerator is seen, wherein the transparent display assembly comprises: a front panel defining at least a portion of a front surface of the door; a rear panel defining at least a portion of 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 in the sealed space; a light guide plate spaced apart from the display to brighten up the display; and a display cable guided to the outside of the outer spacer through the space between the rear panel and the outer spacer; a first spacer supporting the light guide plate in the sealed space and maintaining a distance between the display and the light guide plate, wherein an inert gas is injected between the front panel and the light guide plate through an injection hole of the outer spacer to provide an insulation layer, characterized by an insulation panel disposed between the light guide plate and the rear panel; a fourth spacer disposed on a rear surface of the insulation panel to maintain a distance between the insulation panel and the rear panel; wherein the display, the light guide plate, the first spacer, the insulation panel and the fourth spacer are disposed in an inner region of the outer spacer between the front panel and the rear panel, and wherein the fourth spacer is adhered to the insulation panel and the rear panel by adhesion members configured to provide an insulation space that is in a sealed state. a front panel defining at least a portion of a front surface of the door; a rear panel defining at least a portion of 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 in the sealed space; a light guide plate spaced apart from the display to brighten up the display; and a display cable guided to the outside of the outer spacer through the space between the rear panel and the outer spacer; a first spacer supporting the light guide plate in the sealed space and maintaining a distance between the display and the light guide plate, wherein an inert gas is injected between the front panel and the light guide plate through an injection hole of the outer spacer to provide an insulation layer, characterized by an insulation panel disposed between the light guide plate and the rear panel; a fourth spacer disposed on a rear surface of the insulation panel to maintain a distance between the insulation panel and the rear panel; wherein the display, the light guide plate, the first spacer, the insulation panel and the fourth spacer are disposed in an inner region of the outer spacer between the front panel and the rear panel, and wherein the fourth spacer is adhered to the insulation panel and the rear panel by adhesion members configured to provide an insulation space that is in a sealed state.