A refrigerator comprising a fan to operate for supplying cold air to a cooling chamber; an RF output device disposed in the cooling chamber, and for outputting an RF signal into a cavity in the cooling chamber; and a controller for controlling the RF output device, wherein the controller is configured to output the RF signal to goods in the cavity, and to operate in a first section in which temperature of the goods falls, and a second section in which the temperature of the increases after the first section and maintains, wherein when the RF output device operates, a temperature of the cavity is higher than a temperature of other area in the cooling chamber. Accordingly, the freshness of the goods in the refrigerator can be maintained by using the RF signal.