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.