To enable power saving effect to be enhanced by visually confirming inside a refrigerator from outside in a easy manner while a door is closed.

A window hole 12 for communicating inside 6 of the refrigerator and outside 60 of the refrigerator is provided on the door 3, transparent windows 11, 20 formed with magic mirrors on which translucent reflection film is coated so that inside 6 of the refrigerator can be seen through are attached to the window hole 12. At the time that the door 3 is closed, inside 6 of the refrigerator can not be seen through the transparent windows 11, 20 if an illumination lamp 10 is not lit while inside 6 of the refrigerator can be seen through the transparent windows 11, 20 if the illumination lamp 10 is lit.