A refrigerator comprising: a cabinet that includes storage compartments (102, 104) for keeping food and an evaporating chamber for producing cold air; doors (12, 13) that are coupled to the cabinet to open and close the storage compartments(102, 104); and an evaporator that includes an evaporating unit for evaporation, the evaporating unit including an evaporator pipe, a frame supporting the evaporator pipe, and a plurality of heat exchanger fins through which the evaporator pipe passes; an L-cord heater that is disposed on the evaporator, a sheath heater that is disposed under the evaporator; a temperature sensor that is mounted on the evaporator; an evaporation pan that is disposed under the evaporator and configured to collect and discharge water or ice that drops from the evaporator,wherein the sheath heater comprises: a lead wire; a cold pin that has a first end connected to the end of the lead wire and provided to prevent a coating of the lead wire from melting to high-temperature heat from a heating wire; the heating wire connected to a second end of the cold pin; a heating pipe that has the cold pin and the heating wire therein; and a thermal contraction tube that covers the end portion of the heating pipe; characterized in that a surface treatment portion (A, B, C, 55) for absorbing radiant heat from the sheath heater is formed on the inner side of the evaporation pan that corresponds at least to the area under the cold pin, and wherein the surface treatment portion (A, B, C, 55) includes any one of a coated portion with black paint (A, B), a heat absorbing pad, and an anodized portion. a cabinet that includes storage compartments (102, 104) for keeping food and an evaporating chamber for producing cold air; doors (12, 13) that are coupled to the cabinet to open and close the storage compartments(102, 104); and an evaporator that includes an evaporating unit for evaporation, the evaporating unit including an evaporator pipe, a frame supporting the evaporator pipe, and a plurality of heat exchanger fins through which the evaporator pipe passes; an L-cord heater that is disposed on the evaporator, a sheath heater that is disposed under the evaporator; a temperature sensor that is mounted on the evaporator; an evaporation pan that is disposed under the evaporator and configured to collect and discharge water or ice that drops from the evaporator,wherein the sheath heater comprises: a lead wire; a cold pin that has a first end connected to the end of the lead wire and provided to prevent a coating of the lead wire from melting to high-temperature heat from a heating wire; the heating wire connected to a second end of the cold pin; a heating pipe that has the cold pin and the heating wire therein; and a thermal contraction tube that covers the end portion of the heating pipe; characterized in that a surface treatment portion (A, B, C, 55) for absorbing radiant heat from the sheath heater is formed on the inner side of the evaporation pan that corresponds at least to the area under the cold pin, and wherein the surface treatment portion (A, B, C, 55) includes any one of a coated portion with black paint (A, B), a heat absorbing pad, and an anodized portion.