A refrigerator comprising: a cabinet which has a storage chamber therein; an inner door which is rotatably connected to a front surface of the cabinet , opens and closes a portion of the storage chamber, and has an access hole of a predetermined size; an accommodation case which is mounted on a rear surface of the inner door , and has a front surface which is opened so as to communicate with the access hole and a rear surface which has a plurality of cool air holes which are vertically spaced apart from each other; an outer door which is rotatably connected to the inner door at a front side of the inner door and selectively opens and closes the access hole ; a shielder which is movably coupled to the rear surface of the accommodation case to selectively shield the plurality of cool air holes ; and a driver which is provided in the accommodation case for moving the shielder in the up and down direction, wherein the driver includes a guide bar which is extended along a lower surface portion and a rear surface portion of the accommodation case , wherein a front end portion of the guide bar is exposed to a front surface of the inner door, and wherein a rear end portion of the guide bar is positioned at a lower end portion of a side surface of the shielder , characterized in that the refrigerator further comprises a pressing protrusion which protrudes from a rear surface of the outer door , wherein, when the outer door is closed, the pressing protrusion backwardly pushes the front end portion of the guide bar , and wherein the rear end portion of the guide bar is configured to push up a lower end portion of the shielder to open the plurality of cool air holes . a cabinet which has a storage chamber therein; an inner door which is rotatably connected to a front surface of the cabinet , opens and closes a portion of the storage chamber, and has an access hole of a predetermined size; an accommodation case which is mounted on a rear surface of the inner door , and has a front surface which is opened so as to communicate with the access hole and a rear surface which has a plurality of cool air holes which are vertically spaced apart from each other; an outer door which is rotatably connected to the inner door at a front side of the inner door and selectively opens and closes the access hole ; a shielder which is movably coupled to the rear surface of the accommodation case to selectively shield the plurality of cool air holes ; and a driver which is provided in the accommodation case for moving the shielder in the up and down direction, wherein the driver includes a guide bar which is extended along a lower surface portion and a rear surface portion of the accommodation case , wherein a front end portion of the guide bar is exposed to a front surface of the inner door, and wherein a rear end portion of the guide bar is positioned at a lower end portion of a side surface of the shielder , characterized in that the refrigerator further comprises a pressing protrusion which protrudes from a rear surface of the outer door , wherein, when the outer door is closed, the pressing protrusion backwardly pushes the front end portion of the guide bar , and wherein the rear end portion of the guide bar is configured to push up a lower end portion of the shielder to open the plurality of cool air holes . <EOS>