Abstract: A refrigerator and a safety control method thereof, which is capable of ensuring protection from a high voltage applied to a shelf on which food is placed in order to improve food preservation. The safety control method of a refrigerator having a storage chamber which stores food, the method includes sensing a chamber temperature of the storage chamber, comparing the sensed chamber temperature with a predetermined setting temperature and generating a high voltage when the chamber temperature is less than the predetermined setting temperature, supplying the generated high voltage to the inside of the storage chamber to preserve the food, determining whether a high voltage cutoff condition occurs while the high voltage is supplied to the inside of the storage chamber, and cutting off the high voltage supplied to the inside of the storage chamber when the high voltage cutoff condition occurs.