A refrigerator door including an exterior member, a front panel and a display assembly on which a plurality of LEDs are mounted, wherein the exterior member comprises: a stainless steel plate configured to form an exterior of the refrigerator door and to cover the display assembly; and a displaying part formed by a collection of first through-holes passing through the stainless steel plate at positions corresponding to the plurality of LEDs and configured to display operating information of the refrigerator by a combination of the first through-holes through which light of the LEDs passes, wherein a diffusion sheet which shields the entire displaying part and diffuses the transmitted light is provided at the rear surface of the front panel, wherein a hole-filling member for transmitting light is formed at the rear surface of the front panel and completely fills the first through-holes, the hole-filling member forms a printed layer having a thickness of about 35 to 55 μm at the rear surface of the front panel corresponding to the displaying part to cover the entire displaying part, wherein each of the first through-holes is formed by a front surface groove which is recessed from a front surface of the stainless steel plate by an etching and determines a hole size of each of the first through-holes and a rear surface groove which is recessed at a position of a rear surface of the stainless steel plate facing the front surface groove by the etching and is in communication with the front surface groove, wherein the front surface groove and the rear surface groove is matched one-to-one with each other and is in communication with each other, and thus the first through-holes are formed. a stainless steel plate configured to form an exterior of the refrigerator door and to cover the display assembly; and a displaying part formed by a collection of first through-holes passing through the stainless steel plate at positions corresponding to the plurality of LEDs and configured to display operating information of the refrigerator by a combination of the first through-holes through which light of the LEDs passes, wherein a diffusion sheet which shields the entire displaying part and diffuses the transmitted light is provided at the rear surface of the front panel, wherein a hole-filling member for transmitting light is formed at the rear surface of the front panel and completely fills the first through-holes, the hole-filling member forms a printed layer having a thickness of about 35 to 55 μm at the rear surface of the front panel corresponding to the displaying part to cover the entire displaying part, wherein each of the first through-holes is formed by a front surface groove which is recessed from a front surface of the stainless steel plate by an etching and determines a hole size of each of the first through-holes and a rear surface groove which is recessed at a position of a rear surface of the stainless steel plate facing the front surface groove by the etching and is in communication with the front surface groove, wherein the front surface groove and the rear surface groove is matched one-to-one with each other and is in communication with each other, and thus the first through-holes are formed.