A refrigerator comprising: a cabinet in which a storage chamber (W) is formed; a cooler configured to cool the storage chamber (W), the cooler including a compressor and a fan ; a heater configured to heat the storage chamber (W); a temperature sensor configured to sense a storage chamber temperature; and a controller configured to control the cooler and the heater, wherein the controller is configured to selectively perform a plurality of modes, wherein the plurality of modes includes: a cooling mode (E) in which the cooler is operated, a heating mode (H) in which the heater is operated, and characterized in that the plurality of modes further includes: a standby mode (D) in which the cooler and the heater are stopped, the standby mode (D) being a mode in which the compressor , the fan and the heater are in an off state, and wherein the plurality of modes is performed in the order of the cooling mode (E), the standby mode (D), and heating mode (H), or are performed in the order of the heating mode (H), the standby mode (D), and the cooling mode (E), wherein the standby mode (D) maintains after the cooling mode (E) ends, and when a starting condition of the heating mode (H) is satisfied during the standby mode (D), the standby mode (D) is switched to the heating mode (H), and/or wherein the standby mode (D) maintains after the heating mode (H) ends, and when a starting condition of the cooling mode (E) is satisfied during the standby mode (D), the standby mode (D) is switched to the cooling mode (E). a cabinet in which a storage chamber (W) is formed; a cooler configured to cool the storage chamber (W), the cooler including a compressor and a fan ; a heater configured to heat the storage chamber (W); a temperature sensor configured to sense a storage chamber temperature; and a controller configured to control the cooler and the heater, wherein the controller is configured to selectively perform a plurality of modes, wherein the plurality of modes includes: a cooling mode (E) in which the cooler is operated, a heating mode (H) in which the heater is operated, and characterized in that the plurality of modes further includes: a standby mode (D) in which the cooler and the heater are stopped, the standby mode (D) being a mode in which the compressor , the fan and the heater are in an off state, and a cooling mode (E) in which the cooler is operated, a heating mode (H) in which the heater is operated, and characterized in that the plurality of modes further includes: a standby mode (D) in which the cooler and the heater are stopped, the standby mode (D) being a mode in which the compressor , the fan and the heater are in an off state, and wherein the plurality of modes is performed in the order of the cooling mode (E), the standby mode (D), and heating mode (H), or are performed in the order of the heating mode (H), the standby mode (D), and the cooling mode (E), wherein the standby mode (D) maintains after the cooling mode (E) ends, and when a starting condition of the heating mode (H) is satisfied during the standby mode (D), the standby mode (D) is switched to the heating mode (H), and/or wherein the standby mode (D) maintains after the heating mode (H) ends, and when a starting condition of the cooling mode (E) is satisfied during the standby mode (D), the standby mode (D) is switched to the cooling mode (E). <EOS>