A refrigerator comprising: a body; a storage compartment disposed inside the body and including an opening; a drawer configured to open and close the opening of the storage compartment; and a sliding apparatus configured to slidably support the drawer against the storage compartment, the sliding apparatus comprising: a first rail installed on an inner wall of the storage compartment, a second rail installed on the drawer and configured to be slidable with respect to the first rail, and a drive unit installed on the first rail and configured to provide a driving force to slide the second rail through a power transmission unit, wherein the drive unit comprises: a housing coupled to a lower surface of the first rail; a drive motor disposed inside the housing; and a drive gear disposed outside the housing and configured to transmit a driving force of the drive motor to the power transmission unit, wherein the power transmission unit comprises a first rack gear installed on the second rail and configured to engage with the drive gear, characterised by an elastic member disposed between the first rail and the second rail to press the first rack gear against the drive gear. a body; a storage compartment disposed inside the body and including an opening; a drawer configured to open and close the opening of the storage compartment; and a sliding apparatus configured to slidably support the drawer against the storage compartment, the sliding apparatus comprising: a first rail installed on an inner wall of the storage compartment, a second rail installed on the drawer and configured to be slidable with respect to the first rail, and a drive unit installed on the first rail and configured to provide a driving force to slide the second rail through a power transmission unit, wherein the drive unit comprises: a housing coupled to a lower surface of the first rail; a drive motor disposed inside the housing; and a drive gear disposed outside the housing and configured to transmit a driving force of the drive motor to the power transmission unit, wherein the power transmission unit comprises a first rack gear installed on the second rail and configured to engage with the drive gear, a first rail installed on an inner wall of the storage compartment, a second rail installed on the drawer and configured to be slidable with respect to the first rail, and a drive unit installed on the first rail and configured to provide a driving force to slide the second rail through a power transmission unit, wherein the drive unit comprises: a housing coupled to a lower surface of the first rail; a drive motor disposed inside the housing; and a drive gear disposed outside the housing and configured to transmit a driving force of the drive motor to the power transmission unit, wherein the power transmission unit comprises a first rack gear installed on the second rail and configured to engage with the drive gear, a housing coupled to a lower surface of the first rail; a drive motor disposed inside the housing; and a drive gear disposed outside the housing and configured to transmit a driving force of the drive motor to the power transmission unit, wherein the power transmission unit comprises a first rack gear installed on the second rail and configured to engage with the drive gear, characterised by an elastic member disposed between the first rail and the second rail to press the first rack gear against the drive gear.