A refrigerator comprising: a storeroom; and a cold air supplier configured to supply cold air into the storeroom, wherein the cold air supplier comprises: a heat exchanger (100, 200, 300) producing cold air, a duct accommodating the heat exchanger and defining a flow path for air to pass through the heat exchanger, an inlet arranged on a front side of the duct, through which the air of the storeroom flows in, and a fan generating an air flow inside the duct, wherein the heat exchanger comprises: a tube in which a refrigerant flows, and a fin (120, 220, 320, 420, 421) coupled to the outer surface of the tube, wherein the tube is eccentrically arranged with respect to a rear side of the duct, wherein the fin comprises a plurality of holes (121, 221, 321, 423, 424, 426) through which the tube passes, and each of the plurality of holes is arranged to be offset from a centre of the fin such that a part of the plurality of holes is eccentrically arranged with respect to the rear side of the duct, characterized in that the fin is shaped like a plate and includes a plurality of bent portions formed in a portion of the fin in which the plurality of holes is not formed, and wherein one of the plurality of bent portions is formed between the plurality of holes and another of the plurality of bent portions is formed on a rear edge of the fin with respect to the duct. a storeroom; and a cold air supplier configured to supply cold air into the storeroom, a heat exchanger (100, 200, 300) producing cold air, a duct accommodating the heat exchanger and defining a flow path for air to pass through the heat exchanger, an inlet arranged on a front side of the duct, through which the air of the storeroom flows in, and a fan generating an air flow inside the duct, wherein the heat exchanger comprises: a tube in which a refrigerant flows, and a fin (120, 220, 320, 420, 421) coupled to the outer surface of the tube, wherein the tube is eccentrically arranged with respect to a rear side of the duct, wherein the fin comprises a plurality of holes (121, 221, 321, 423, 424, 426) through which the tube passes, and each of the plurality of holes is arranged to be offset from a centre of the fin such that a part of the plurality of holes is eccentrically arranged with respect to the rear side of the duct, characterized in that the fin is shaped like a plate and includes a plurality of bent portions formed in a portion of the fin in which the plurality of holes is not formed, and wherein one of the plurality of bent portions is formed between the plurality of holes and another of the plurality of bent portions is formed on a rear edge of the fin with respect to the duct. a tube in which a refrigerant flows, and a fin (120, 220, 320, 420, 421) coupled to the outer surface of the tube, wherein the tube is eccentrically arranged with respect to a rear side of the duct, wherein the fin comprises a plurality of holes (121, 221, 321, 423, 424, 426) through which the tube passes, and each of the plurality of holes is arranged to be offset from a centre of the fin such that a part of the plurality of holes is eccentrically arranged with respect to the rear side of the duct, characterized in that the fin is shaped like a plate and includes a plurality of bent portions formed in a portion of the fin in which the plurality of holes is not formed, and wherein one of the plurality of bent portions is formed between the plurality of holes and another of the plurality of bent portions is formed on a rear edge of the fin with respect to the duct.