A refrigerator comprising: a cabinet having a storage compartment provided with a bottom surface ; a drawer configured to be inserted into or ejected from the storage compartment ; a plurality of food storage containers received in the storage compartment and mounted at an upper side of the bottom surface ; a plurality of sensor units , wherein each sensor unit is respectively installed on lower surfaces of the plurality of food storage containers ; a plurality of antenna units provided on the bottom surface of the storage compartment to respectively correspond to each sensor unit ; a heater for providing heat to increase a temperature of the storage compartment ; one reader unit to which signals transmitted from the plurality of antenna units are transferred, and a display unit for displaying information on the refrigerator and configured to display individual information on salinity sensed by the sensor unit with respect to all the food storage containers , wherein the bottom surface partitions a lower external appearance of the storage compartment , and the sensor unit includes a salinity sensor for measuring salinity inside the food storage container and transmitting the measured salinity to the antenna units , and wherein the food storage containers are arranged in such a manner that two food storage containers are arranged in a left and right direction and two other food storage containers are arranged in a forward and backward direction, wherein the antenna units are arranged below the bottom surface and thus are not exposed to the storage compartment , wherein a ferrite sheet is arranged between the heater and the antenna unit , wherein the ferrite sheet and the heater are sequentially arranged below the antenna unit, and wherein a space exists between the ferrite sheet and the heater . a cabinet having a storage compartment provided with a bottom surface ; a drawer configured to be inserted into or ejected from the storage compartment ; a plurality of food storage containers received in the storage compartment and mounted at an upper side of the bottom surface ; a plurality of sensor units , wherein each sensor unit is respectively installed on lower surfaces of the plurality of food storage containers ; a plurality of antenna units provided on the bottom surface of the storage compartment to respectively correspond to each sensor unit ; a heater for providing heat to increase a temperature of the storage compartment ; one reader unit to which signals transmitted from the plurality of antenna units are transferred, and a display unit for displaying information on the refrigerator and configured to display individual information on salinity sensed by the sensor unit with respect to all the food storage containers , wherein the bottom surface partitions a lower external appearance of the storage compartment , and the sensor unit includes a salinity sensor for measuring salinity inside the food storage container and transmitting the measured salinity to the antenna units , and wherein the food storage containers are arranged in such a manner that two food storage containers are arranged in a left and right direction and two other food storage containers are arranged in a forward and backward direction, wherein the antenna units are arranged below the bottom surface and thus are not exposed to the storage compartment , wherein a ferrite sheet is arranged between the heater and the antenna unit , wherein the ferrite sheet and the heater are sequentially arranged below the antenna unit, and wherein a space exists between the ferrite sheet and the heater . <EOS>