A refrigerator includes a cabinet that defines a storage chamber, a heat exchange space that is defined by the cabinet and positioned rearward of the storage chamber, an evaporator unit that is provided at the heat exchange space, a grill fan assembly that provides a barrier between the heat exchange space and the storage chamber, a drawer door that is configured to be inserted into and withdrawn out of the storage chamber, a draw-out rail provided between an inner surface of the lower storage chamber and both lateral sides of the drawer door to guide a movement of the drawer door into and out of the storage chamber, and a lighting unit provided at a rear surface of the door part and configured to illuminate the drawer part and to guide air coming from the outlet of the grill fan assembly in a downward direction into the storage space.