A refrigerator comprising: a cabinet defining a storage compartment; a door configured to open and close the storage compartment; and a door opening device configured to open the door, the door opening device including a driving unit and a pushing member (110, 400) configured to be pushed out by the driving unit to thereby open the door, wherein the pushing member (110, 400) includes: a first rack (120, 410) configured to be driven by the driving unit in a first direction, and a second rack (140, 420) configured to be driven by the driving unit in the first direction, the first rack (120, 410) being slidably coupled to the second rack to thereby move relative to the second rack (140, 420), the first rack (120, 410) being configured to be withdrawn by a predetermined distance relative to the second rack (140, 420), characterized in that: the first rack (120, 410) is located vertically above the second rack (140, 420), the door opening device further includes: a first transferring member that is configured to couple the first rack (120, 410) to the second rack (140, 420) and to transfer movement power from the first rack (120, 410) to the second rack (140, 420) based on the first rack (120, 410) being withdrawn by the predetermined distance, a second transferring member that is configured to transfer movement power from the second rack (140, 420) to the first rack (120, 410) based on the second rack (140, 420) moving in the first direction, wherein the second transferring member is movably provided in the second rack (140, 420) and configured to move in a vertical direction, and a guide cover fixed to the second rack and configured to guide vertical movement of the second transferring member. a cabinet defining a storage compartment; a door configured to open and close the storage compartment; and a door opening device configured to open the door, the door opening device including a driving unit and a pushing member (110, 400) configured to be pushed out by the driving unit to thereby open the door, wherein the pushing member (110, 400) includes: a first rack (120, 410) configured to be driven by the driving unit in a first direction, and a second rack (140, 420) configured to be driven by the driving unit in the first direction, the first rack (120, 410) being slidably coupled to the second rack to thereby move relative to the second rack (140, 420), the first rack (120, 410) being configured to be withdrawn by a predetermined distance relative to the second rack (140, 420), characterized in that: the first rack (120, 410) is located vertically above the second rack (140, 420), the door opening device further includes: a first transferring member that is configured to couple the first rack (120, 410) to the second rack (140, 420) and to transfer movement power from the first rack (120, 410) to the second rack (140, 420) based on the first rack (120, 410) being withdrawn by the predetermined distance, a second transferring member that is configured to transfer movement power from the second rack (140, 420) to the first rack (120, 410) based on the second rack (140, 420) moving in the first direction, wherein the second transferring member is movably provided in the second rack (140, 420) and configured to move in a vertical direction, and a guide cover fixed to the second rack and configured to guide vertical movement of the second transferring member. a first rack (120, 410) configured to be driven by the driving unit in a first direction, and a second rack (140, 420) configured to be driven by the driving unit in the first direction, the first rack (120, 410) being slidably coupled to the second rack to thereby move relative to the second rack (140, 420), the first rack (120, 410) being configured to be withdrawn by a predetermined distance relative to the second rack (140, 420), characterized in that: the first rack (120, 410) is located vertically above the second rack (140, 420), the door opening device further includes: a first transferring member that is configured to couple the first rack (120, 410) to the second rack (140, 420) and to transfer movement power from the first rack (120, 410) to the second rack (140, 420) based on the first rack (120, 410) being withdrawn by the predetermined distance, a second transferring member that is configured to transfer movement power from the second rack (140, 420) to the first rack (120, 410) based on the second rack (140, 420) moving in the first direction, wherein the second transferring member is movably provided in the second rack (140, 420) and configured to move in a vertical direction, and a guide cover fixed to the second rack and configured to guide vertical movement of the second transferring member. a first transferring member that is configured to couple the first rack (120, 410) to the second rack (140, 420) and to transfer movement power from the first rack (120, 410) to the second rack (140, 420) based on the first rack (120, 410) being withdrawn by the predetermined distance, a second transferring member that is configured to transfer movement power from the second rack (140, 420) to the first rack (120, 410) based on the second rack (140, 420) moving in the first direction, wherein the second transferring member is movably provided in the second rack (140, 420) and configured to move in a vertical direction, and a guide cover fixed to the second rack and configured to guide vertical movement of the second transferring member.