A refrigerator comprising: a cabinet having a storage chamber; a drawer provided in the storage chamber, wherein the drawer comprises a front panel and a storage room provided at a rear of the front panel; a driving part installed in the storage chamber, the driving part including a pinion, a portion of the pinion being exposed to a bottom surface of an inner part of the storage chamber of the cabinet; and a rack gear assembly provided on a lower surface of the storage room for moving the drawer out of and into the storage chamber by rotations of the pinion in order to open and close the drawer, wherein the rack gear assembly includes: a first rack member and a second rack member having rack gears, respectively, for engaging with the pinion for sequentially moving forward; characterized by a confining protrusion part provided in the storage chamber and configured to confine a movement of the second rack member in a closing direction of the drawer; a stopper member provided on the second rack member and configured to come into contact with the confining protrusion part during the movement of the second rack member in the closing direction of the drawer for blocking said movement of the second rack member; and a noise reduction part provided on at least one of the stopper member and the confining protrusion part and being configured to reduce an impact noise occurring when the stopper member comes into contact with the confining protrusion part. a cabinet having a storage chamber; a drawer provided in the storage chamber, wherein the drawer comprises a front panel and a storage room provided at a rear of the front panel; a driving part installed in the storage chamber, the driving part including a pinion, a portion of the pinion being exposed to a bottom surface of an inner part of the storage chamber of the cabinet; and a rack gear assembly provided on a lower surface of the storage room for moving the drawer out of and into the storage chamber by rotations of the pinion in order to open and close the drawer, wherein the rack gear assembly includes: a first rack member and a second rack member having rack gears, respectively, for engaging with the pinion for sequentially moving forward; characterized by a confining protrusion part provided in the storage chamber and configured to confine a movement of the second rack member in a closing direction of the drawer; a stopper member provided on the second rack member and configured to come into contact with the confining protrusion part during the movement of the second rack member in the closing direction of the drawer for blocking said movement of the second rack member; and a noise reduction part provided on at least one of the stopper member and the confining protrusion part and being configured to reduce an impact noise occurring when the stopper member comes into contact with the confining protrusion part. a first rack member and a second rack member having rack gears, respectively, for engaging with the pinion for sequentially moving forward; characterized by a confining protrusion part provided in the storage chamber and configured to confine a movement of the second rack member in a closing direction of the drawer; a stopper member provided on the second rack member and configured to come into contact with the confining protrusion part during the movement of the second rack member in the closing direction of the drawer for blocking said movement of the second rack member; and a noise reduction part provided on at least one of the stopper member and the confining protrusion part and being configured to reduce an impact noise occurring when the stopper member comes into contact with the confining protrusion part.