A refrigerator comprising: a refrigerator body having a cold chamber defined therein, and one or more storage chambers disposed in the lower portion of the cold chamber, wherein the one or more storage chambers is in the form of one or more containers; a cool air generation chamber having a cooler that generates cool air and a fan for supplying cool air mounted therein; a partition plate for partitioning the cold chamber and the cool air generation chamber from each other, the partition plate having a main flow channel for guiding the cool air supplied by the fan to the cold chamber and at least one cool air hole located between the fan and the main flow channel, through which the cool air is bypassed to the one or more storage chambers; and at least one bypass duct for guiding the cool air bypassed through the at least one cool air hole to the one or more storage chambers; characterized by a damper mounted in the cool air generation chamber and disposed between the bypass duct and the main flow channel for selectively opening and closing the main flow channel, wherein a lowermost one of the one or more storage chambers is disposed adjacent a lower wall of cold chamber; wherein the one or more storage chambers are cooled more rapidly by the cool air supplied through the at least one bypass duct, when the damper is closed than when the damper is opened, wherein the at least one cool air hole is disposed over the cooler and the lowermost one of the one or more storage chambers is disposed under the cooler, and wherein the at least one bypass duct extends from the at least one cool air hole to the lowermost one of the one or more storage chambers in a vertical direction. a refrigerator body having a cold chamber defined therein, and one or more storage chambers disposed in the lower portion of the cold chamber, wherein the one or more storage chambers is in the form of one or more containers; a cool air generation chamber having a cooler that generates cool air and a fan for supplying cool air mounted therein; a partition plate for partitioning the cold chamber and the cool air generation chamber from each other, the partition plate having a main flow channel for guiding the cool air supplied by the fan to the cold chamber and at least one cool air hole located between the fan and the main flow channel, through which the cool air is bypassed to the one or more storage chambers; and at least one bypass duct for guiding the cool air bypassed through the at least one cool air hole to the one or more storage chambers; characterized by a damper mounted in the cool air generation chamber and disposed between the bypass duct and the main flow channel for selectively opening and closing the main flow channel, wherein a lowermost one of the one or more storage chambers is disposed adjacent a lower wall of cold chamber; wherein the one or more storage chambers are cooled more rapidly by the cool air supplied through the at least one bypass duct, when the damper is closed than when the damper is opened, wherein the at least one cool air hole is disposed over the cooler and the lowermost one of the one or more storage chambers is disposed under the cooler, and wherein the at least one bypass duct extends from the at least one cool air hole to the lowermost one of the one or more storage chambers in a vertical direction.