A refrigerating and freezing device including a cabinet, and an aging device for aging a to-be-aged material therein is provided in the cabinet. The aging device includes an outer housing and an inner housing provided in the outer housing, and an aging chamber for accommodating the to-be-aged material is defined in the inner housing; two transverse sides of the inner housing and two transverse sides of the outer housing are arranged at intervals to form two longitudinally extending air supply channels, and the air supply channels are communicated with the aging chamber through air supply ports formed in two transverse side plates of the inner housing. The aging device further includes a circulating fan for driving air flow in the two air supply channels to flow into the aging chamber through the air supply ports.