A refrigerator, comprising a refrigerator body defining at least one containing space, a compartment door for opening and closing the at least one containing space separately, and a thawing device disposed in one of the containing spaces, wherein the thawing device comprises: a cavity, defining a thawing chamber having a forward opening therein, the thawing chamber being configured for placement of an object to be processed; a device door, disposed at the forward opening of the thawing chamber and configured to open and close the thawing chamber; a radio frequency generation module, configured to generate a radio frequency signal; an upper electrode plate and a lower electrode plate, horizontally disposed on a top wall and a bottom wall of the thawing chamber respectively and electrically connected with the radio frequency generation module respectively to generate radio frequency waves of corresponding frequencies in the thawing chamber according to the radio frequency signal and thaw the object to be processed in the thawing chamber; characterized in that the thawing device comprises a detection module, configured to detect an incident wave signal and a reflected wave signal of an electrical connection wire connecting the radio frequency generation module to the upper electrode plate, and calculate a change rate (Δε) of the dielectric coefficient (ε) of the object to be processed according to a voltage and a current of the incident wave signal and a voltage and a current of the reflected wave signal to determine the thawing progress of the object to be processed, and when the change rate (Δε) of the dielectric coefficient (ε) of the object to be processed is greater than or equal to a first rate threshold, the working power of the radio frequency generation module is reduced by 30% to 40% to prevent the object to be processed from being excessively thawed. a cavity, defining a thawing chamber having a forward opening therein, the thawing chamber being configured for placement of an object to be processed; a device door, disposed at the forward opening of the thawing chamber and configured to open and close the thawing chamber; a radio frequency generation module, configured to generate a radio frequency signal; an upper electrode plate and a lower electrode plate, horizontally disposed on a top wall and a bottom wall of the thawing chamber respectively and electrically connected with the radio frequency generation module respectively to generate radio frequency waves of corresponding frequencies in the thawing chamber according to the radio frequency signal and thaw the object to be processed in the thawing chamber; characterized in that the thawing device comprises a detection module, configured to detect an incident wave signal and a reflected wave signal of an electrical connection wire connecting the radio frequency generation module to the upper electrode plate, and calculate a change rate (Δε) of the dielectric coefficient (ε) of the object to be processed according to a voltage and a current of the incident wave signal and a voltage and a current of the reflected wave signal to determine the thawing progress of the object to be processed, and when the change rate (Δε) of the dielectric coefficient (ε) of the object to be processed is greater than or equal to a first rate threshold, the working power of the radio frequency generation module is reduced by 30% to 40% to prevent the object to be processed from being excessively thawed.