Provided is a refrigerator (1), comprising: an opening portion (13a) which is a passage through which cold air is supplied from a cooling chamber (13) to a refrigerating chamber (3) and a freezing chamber (4A); a shielding device (50) for closing the opening portion (13a); a detecting device for detecting the opening and closing of a refrigerating chamber door (8); and a control device (34) for controlling the shielding means (50). When a user opens the refrigerating chamber door (8), the control device (34) puts the shielding device (50) in a closed state to close the opening portion (13a). Therefore, even if the door (8) of the refrigerating chamber (3) is closed after opening, cold air in the refrigerating chamber (3) can be inhibited from flowing into the freezing chamber (4A) along with these actions, thus preventing accidental opening of a door (9) of the freezing chamber (4A).