A method for controlling a refrigerator, wherein the refrigerator comprises: a refrigerating compartment; a freezing compartment partitioned from the refrigerating compartment; a deep freezing compartment accommodated in the freezing compartment and partitioned from the freezing compartment; a thermoelectric module provided to cool the deep freezing compartment to a temperature lower than that of the freezing compartment; a temperature sensor configured to detect a temperature within the deep freezing compartment; a deep freezing compartment fan configured to allow internal air of the deep freezing compartment to forcibly flow; a freezing compartment fan configured to allow internal air of the freezing compartment to forcibly flow; and a controller configured to control driving of the thermoelectric module, the freezing compartment fan, and the deep freezing compartment fan; the method characterized by determining whether a deep freezing compartment mode is in an on state; determining whether an input condition for a deep freezing compartment load correspondence operation is satisfied; and determining whether an input condition for a freezing compartment load correspondence operation is satisfied, wherein, when the deep freezing compartment mode is in the on state, and both of the input conditions for the deep freezing compartment load correspondence operation and the freezing compartment load correspondence operation are satisfied (S311, S320), the deep freezing compartment load correspondence operation is performed by priority, wherein the input condition for the deep freezing compartment load correspondence operation comprises: a first condition in which the temperature of the deep freezing compartment rises to a set temperature (Ta) or more during a set time (ta) after a freezing compartment door is opened; a second condition in which the temperature of the deep freezing compartment is in an upper limit temperature region; a third condition in which a first cycle starts after the freezing compartment or the deep freezing compartment is defrosted; a fourth condition in which the deep freezing compartment mode is switched from the off state to an on state; and a fifth condition in which the refrigerator is switched from a power-off state to a power-on state, wherein, when at least one of the first to fifth conditions is satisfied, a first deep freezing compartment load correspondence operation is performed. a refrigerating compartment; a freezing compartment partitioned from the refrigerating compartment; a deep freezing compartment accommodated in the freezing compartment and partitioned from the freezing compartment; a thermoelectric module provided to cool the deep freezing compartment to a temperature lower than that of the freezing compartment; a temperature sensor configured to detect a temperature within the deep freezing compartment; a deep freezing compartment fan configured to allow internal air of the deep freezing compartment to forcibly flow; a freezing compartment fan configured to allow internal air of the freezing compartment to forcibly flow; and a controller configured to control driving of the thermoelectric module, the freezing compartment fan, and the deep freezing compartment fan; the method characterized by determining whether a deep freezing compartment mode is in an on state; determining whether an input condition for a deep freezing compartment load correspondence operation is satisfied; and determining whether an input condition for a freezing compartment load correspondence operation is satisfied, wherein, when the deep freezing compartment mode is in the on state, and both of the input conditions for the deep freezing compartment load correspondence operation and the freezing compartment load correspondence operation are satisfied (S311, S320), the deep freezing compartment load correspondence operation is performed by priority, wherein the input condition for the deep freezing compartment load correspondence operation comprises: a first condition in which the temperature of the deep freezing compartment rises to a set temperature (Ta) or more during a set time (ta) after a freezing compartment door is opened; a second condition in which the temperature of the deep freezing compartment is in an upper limit temperature region; a third condition in which a first cycle starts after the freezing compartment or the deep freezing compartment is defrosted; a fourth condition in which the deep freezing compartment mode is switched from the off state to an on state; and a fifth condition in which the refrigerator is switched from a power-off state to a power-on state, wherein, when at least one of the first to fifth conditions is satisfied, a first deep freezing compartment load correspondence operation is performed. a first condition in which the temperature of the deep freezing compartment rises to a set temperature (Ta) or more during a set time (ta) after a freezing compartment door is opened; a second condition in which the temperature of the deep freezing compartment is in an upper limit temperature region; a third condition in which a first cycle starts after the freezing compartment or the deep freezing compartment is defrosted; a fourth condition in which the deep freezing compartment mode is switched from the off state to an on state; and a fifth condition in which the refrigerator is switched from a power-off state to a power-on state, wherein, when at least one of the first to fifth conditions is satisfied, a first deep freezing compartment load correspondence operation is performed.