A refrigerator, comprising: a main body in which a freezing chamber and a refrigerating chamber are formed; a barrier configured to divide an inner space of the main body into the freezing chamber and the refrigerating chamber; an evaporation chamber dividing wall which divides an inner space of the freezing chamber into a freezing storage chamber and an evaporation chamber in a front-to-rear direction; a main evaporator which is installed in the evaporation chamber to cool the freezing chamber or both the freezing chamber and the refrigerating chamber and which is accommodated in a space formed between a rear wall of the main body and the evaporation chamber dividing wall; a case which is installed in the freezing storage chamber, wherein a rear surface of the case is in close contact with a front surface of the evaporation chamber dividing wall; a deep freezing evaporation chamber cover dividing an inner space of the case into a deep-freezing storage chamber and a deep-freezing evaporation chamber; a drawer which is accommodated in the deep-freezing storage chamber of the case so as to be retractable and withdrawable and in which food is stored; and a rapid cooling module which is accommodated in the deep-freezing evaporation chamber on a rear side of the inner portion of the case and configured to rapidly cool the deep-freezing storage chamber, wherein the rapid cooling module comprises a thermoelectric device, characterized in that the rapid cooling module includes: an auxiliary evaporator in which a low-temperature and low-pressure two-phase refrigerant flows, wherein the thermoelectric device is installed so that an exothermic surface is attached to a surface of the auxiliary evaporator and an endothermic surface which faces the drawer to cool the deep-freezing storage chamber; a heat sink which is attached to the endothermic surface of the thermoelectric device; and a cooling fan which is provided in front of the heat sink. a main body in which a freezing chamber and a refrigerating chamber are formed; a barrier configured to divide an inner space of the main body into the freezing chamber and the refrigerating chamber; an evaporation chamber dividing wall which divides an inner space of the freezing chamber into a freezing storage chamber and an evaporation chamber in a front-to-rear direction; a main evaporator which is installed in the evaporation chamber to cool the freezing chamber or both the freezing chamber and the refrigerating chamber and which is accommodated in a space formed between a rear wall of the main body and the evaporation chamber dividing wall; a case which is installed in the freezing storage chamber, wherein a rear surface of the case is in close contact with a front surface of the evaporation chamber dividing wall; a deep freezing evaporation chamber cover dividing an inner space of the case into a deep-freezing storage chamber and a deep-freezing evaporation chamber; a drawer which is accommodated in the deep-freezing storage chamber of the case so as to be retractable and withdrawable and in which food is stored; and a rapid cooling module which is accommodated in the deep-freezing evaporation chamber on a rear side of the inner portion of the case and configured to rapidly cool the deep-freezing storage chamber, wherein the rapid cooling module comprises a thermoelectric device, characterized in that the rapid cooling module includes: an auxiliary evaporator in which a low-temperature and low-pressure two-phase refrigerant flows, wherein the thermoelectric device is installed so that an exothermic surface is attached to a surface of the auxiliary evaporator and an endothermic surface which faces the drawer to cool the deep-freezing storage chamber; a heat sink which is attached to the endothermic surface of the thermoelectric device; and a cooling fan which is provided in front of the heat sink. an auxiliary evaporator in which a low-temperature and low-pressure two-phase refrigerant flows, wherein the thermoelectric device is installed so that an exothermic surface is attached to a surface of the auxiliary evaporator and an endothermic surface which faces the drawer to cool the deep-freezing storage chamber; a heat sink which is attached to the endothermic surface of the thermoelectric device; and a cooling fan which is provided in front of the heat sink.