Refrigerating chamber air duct device and refrigerator

The utility model discloses a refrigerator and a refrigerating chamber air duct device, which comprises an air duct housing, wherein an air inlet and a plurality of air outlets are formed on the air duct housing; a communicated air duct is formed between the air inlet and the air outlets; the positions of air outlets which are distributed up and down as well as right and left on the housing correspond to all regions in the refrigerating chamber of the refrigerator; and the air duct housing has thermal insulation performance. In the utility model, the cold air circulating path in the refrigerating chamber is optimized, the temperature difference between the upper and the lower layers is reduced, and the problem of condensation of cold air on the air duct housing is effectively solved. The utility model has the advantages of compact structure and reasonable layout.