A refrigerator comprising: a cabinet; a storage compartment (10, 20) defined by the cabinet and having a top surface that defines a top of the storage compartment, the storage compartment comprising a freezing compartment and a refrigerating compartment partitioned by a partition wall and arranged side-by-side in parallel; a cold air generating compartment that is positioned at the upper portion of the cabinet and over both of the freezing compartment and the refrigerating compartment; an evaporator positioned in the cold air generating compartment and configured to generate cold air supplied to the storage compartment (10, 20); a machine room positioned at the upper portion of the cabinet next to the cold air generating chamber, a return duct (130a, 130b, 130c) arranged along a side wall of the freezing compartment and the refrigerating compartment and that connects the freezing compartment and the refrigerating compartment with the cold air generating compartment and that is configured to guide air from inside of the freezing compartment and the refrigerating compartment toward the cold air generating compartment; and a cold air inlet (120a, 120b, 120c) defined in a wall of the cold air generating compartment and connected with the return duct (130a, 130b, 130c) to draw cold air having passed through the freezing compartment and the refrigerating compartment; characterized by a first cold air outlet and a second cold air outlet defined in a bottom wall of the cold air generating compartment and configured to guide cold air generated by the evaporator toward the freezing compartment and the refrigerating compartment, respectively; a first closable damper and a second closable damper positioned in the first cold air outlet and the second cold air outlet to control supply of cold air generated by the evaporator into the freezing compartment and the refrigerating compartment, respectively; a first cold air fan and a second cold air fan positioned in the first cold air outlet and the second cold air outlet to promote movement of cold air generated by the evaporator into the freezing compartment and the refrigerating compartment, respectively; a return damper (121a, 121b, 121c) provided in the cold air inlet (120a, 120b, 120c) configured to control supply of cold air through the cold air inlet (120a, 120b, 120c); and a control unit configured to control the first closable damper and the second closable damper to supply cold air generated by the evaporator to the refrigerating compartment and/or the freezing compartment. a cabinet; a storage compartment (10, 20) defined by the cabinet and having a top surface that defines a top of the storage compartment, the storage compartment comprising a freezing compartment and a refrigerating compartment partitioned by a partition wall and arranged side-by-side in parallel; a cold air generating compartment that is positioned at the upper portion of the cabinet and over both of the freezing compartment and the refrigerating compartment; an evaporator positioned in the cold air generating compartment and configured to generate cold air supplied to the storage compartment (10, 20); a machine room positioned at the upper portion of the cabinet next to the cold air generating chamber, a return duct (130a, 130b, 130c) arranged along a side wall of the freezing compartment and the refrigerating compartment and that connects the freezing compartment and the refrigerating compartment with the cold air generating compartment and that is configured to guide air from inside of the freezing compartment and the refrigerating compartment toward the cold air generating compartment; and a cold air inlet (120a, 120b, 120c) defined in a wall of the cold air generating compartment and connected with the return duct (130a, 130b, 130c) to draw cold air having passed through the freezing compartment and the refrigerating compartment; a first cold air outlet and a second cold air outlet defined in a bottom wall of the cold air generating compartment and configured to guide cold air generated by the evaporator toward the freezing compartment and the refrigerating compartment, respectively; a first closable damper and a second closable damper positioned in the first cold air outlet and the second cold air outlet to control supply of cold air generated by the evaporator into the freezing compartment and the refrigerating compartment, respectively; a first cold air fan and a second cold air fan positioned in the first cold air outlet and the second cold air outlet to promote movement of cold air generated by the evaporator into the freezing compartment and the refrigerating compartment, respectively; a return damper (121a, 121b, 121c) provided in the cold air inlet (120a, 120b, 120c) configured to control supply of cold air through the cold air inlet (120a, 120b, 120c); and a control unit configured to control the first closable damper and the second closable damper to supply cold air generated by the evaporator to the refrigerating compartment and/or the freezing compartment.