A refrigerator having an improved structure to maintain the humidity in a drawer. The refrigerator includes a storage chamber, a drawer configured to be inserted to or withdrawn from the storage chamber, a cover configured to cover an upper part of the drawer, and a rail device configured to guide the drawer to slide in a front-rear direction with respect to the cover and to allow the cover to be located in the storage chamber and to be moved upward with respect to the drawer when the drawer is withdrawn.