To improve convenience of use by enabling use of a mounting base as a temporary storage yard in the case of taking out or containing a content.

In the refrigerator having drawer doors 3, 4 at a lower part of a horizontally hinged door 2 at an upper part, a mounting base 5 is rotatably provided on a front surface of the door 3. The base 5 used for rotatably mounting is provided on the front face of the door 3 of the refrigerator as an option unit of the refrigerator. A hole for optionally mounting the base 5 is provided at the bottom of the drawer door without impairing an appearance even without mounting the base 5.