PURPOSE: To prevent frosting of a front upper part of a dual-tank type icing tray by providing a discharge part having a discharge port provided on the back of the tray and provided on the back of the tray in a duct, and vent ports formed at the tray and a partition plate of the tray.

CONSTITUTION: A refrigerator has an ice storage box 6, an icing tray 7, a dual-tank type icing tray 10, and a partition plate 15 for partitioning a freezing corner 11. When icing is started, part of chilled gas fed in a large quantity from a discharge part 5c of a duct 5 to the tray 7 with moisture above the tray 10 is introduced from vent ports 15a formed at the tray 10 and the plate 15, and conveyed to a suction port 13. Thus, the moisture on the tray 10 is reduced. Therefore, frosting of the front upper part of the tray can be prevented.