A refrigerator having a cabinet defining: a refrigerating compartment; a freezing compartment below the refrigerating compartment; a barrier vertically partitioning the refrigerating compartment and the freezing compartment; and a heat exchange chamber defined in a rear side of the freezing compartment; an evaporator disposed within the heat exchange chamber, for generating cool air; a drawer assembly defining a sealed space within the refrigerating compartment, the drawer assembly communicating with the heat exchange chamber to receive the cool air, and including: a case; and a drawer withdrawably disposed inside the case; a thermoelectric module disposed in the drawer assembly, the thermoelectric module quickly cooling an inside of the drawer assembly; and a supply duct connecting the drawer assembly and the heat exchange chamber to supply cool air within the heat exchange chamber into the drawer assembly; and a damper disposed in the supply duct, wherein the thermoelectric module includes: a thermoelectric device having a front surface which is defined as a heat absorbing surface and a rear surface which is defined as a heat radiating surface; an insulation member having a punched mounting part on which the thermoelectric device is mounted; a heat absorbing part contacting the front surface of the thermoelectric device; a heat radiating part contacting the rear surface of the thermoelectric device, wherein the heat radiating part communicates with the heat exchange chamber, to discharge heat generated by radiation of the thermoelectric module into the heat exchange chamber, characterized in that cool air within the heat exchange chamber is introduced into the case along the supply duct to primarily cool the inside of the case, wherein the damper closes the supply duct when a temperature of the inside of the drawer assembly reaches a first set temperature, and an operation of the thermoelectric device starts at the same time to further cool the inside of the drawer assembly. a refrigerating compartment; a freezing compartment below the refrigerating compartment; a barrier vertically partitioning the refrigerating compartment and the freezing compartment; and a heat exchange chamber defined in a rear side of the freezing compartment; a case; and a drawer withdrawably disposed inside the case; a thermoelectric device having a front surface which is defined as a heat absorbing surface and a rear surface which is defined as a heat radiating surface; an insulation member having a punched mounting part on which the thermoelectric device is mounted; a heat absorbing part contacting the front surface of the thermoelectric device; a heat radiating part contacting the rear surface of the thermoelectric device, wherein the heat radiating part communicates with the heat exchange chamber, to discharge heat generated by radiation of the thermoelectric module into the heat exchange chamber, characterized in that cool air within the heat exchange chamber is introduced into the case along the supply duct to primarily cool the inside of the case, wherein the damper closes the supply duct when a temperature of the inside of the drawer assembly reaches a first set temperature, and an operation of the thermoelectric device starts at the same time to further cool the inside of the drawer assembly.