A refrigerator comprising: a cabinet configured to define an exterior boundary of the refrigerator with at least one opening therein; a first storage chamber defined by interior walls of the cabinet and configured to store food stuffs; a first door configured to open and close the first storage chamber by rotating about a first rotational axis; a second storage chamber that is smaller than the first storage chamber defined at a side of the first door, and that is configured to enable access to food stuffs while the first door remains closed; a second door, located in a predetermined portion of the first door, configured to open and close the second storage chamber by rotating a second rotational axis, wherein a rotation direction of the second door is identical to the rotation direction of the first door, a first rotational shaft coupled to an upper surface of first door to establish the first rotational axis; a second rotational shaft coupled to an upper surface of second door to establish the second rotational axis; a first connection member configured to connect the first rotational shaft to the cabinet; and a second connection member, one end connected to the upper surface of the first door through the first rotational shaft, and the other end connected to the second rotational shaft; a first recess means positioned on the upper surface of the first door, the first rotation shaft is positioned on the first recess means of the first door, a second recess means positioned on the upper surface of the second door, the second rotation shaft is positioned on the second recess means of the second door, a projection means positioned in front of the second recess means of the second door and configured to be projected upward. a cabinet configured to define an exterior boundary of the refrigerator with at least one opening therein; a first storage chamber defined by interior walls of the cabinet and configured to store food stuffs; a first door configured to open and close the first storage chamber by rotating about a first rotational axis; a second storage chamber that is smaller than the first storage chamber defined at a side of the first door, and that is configured to enable access to food stuffs while the first door remains closed; a second door, located in a predetermined portion of the first door, configured to open and close the second storage chamber by rotating a second rotational axis, wherein a rotation direction of the second door is identical to the rotation direction of the first door, a first rotational shaft coupled to an upper surface of first door to establish the first rotational axis; a second rotational shaft coupled to an upper surface of second door to establish the second rotational axis; a first connection member configured to connect the first rotational shaft to the cabinet; and a second connection member, one end connected to the upper surface of the first door through the first rotational shaft, and the other end connected to the second rotational shaft; a first recess means positioned on the upper surface of the first door, the first rotation shaft is positioned on the first recess means of the first door, a second recess means positioned on the upper surface of the second door, the second rotation shaft is positioned on the second recess means of the second door, a projection means positioned in front of the second recess means of the second door and configured to be projected upward.