A refrigerator and a positioning device for a refrigerator are provided. The positioning device includes: a wave absorbing component disposed in the refrigerator and configured to absorb a radio frequency (RF) signal emitted from an RF tag in the refrigerator; a plurality of reading components disposed in the refrigerator and configured to receive an RF signal passing through the wave absorbing component; an intensity detecting module configured to detect an intensity of the RF signal received by each of the plurality of reading components; and a positioning module configured to determine a location of the RF tag according to the intensity of the RF signal received by each of the plurality of reading components.