The invention provides a refrigerating and freezing device which comprises a first storage room, a cooling room and an air circuit system. The first storage room is divided into multiple storage spaces; the air circuit system is provided with multiple air supply outlets and multiple on-off control devices; each storage room receives an air flow from the cooling room through at least one air supplyoutlet; each first return air inlet communicates with one storage space and the cooling room; the on-off control devices are configured to be used for controlling the air flow from the cooling room to flow to one or more of the multiple air supply outlets so as to control all or part of the air flow to flow to the corresponding storage space; and the multiple storage spaces comprise at least twocolumns of first storage spaces, each column of first storage spaces is sequentially arranged along a vertical direction; and the number of the first storage spaces in any one of the two columns of first storage spaces is equal or unequal. A refrigerating room of a refrigerator can be independently partitioned, so that the best storage environment areas are provided for different food, and a useris guided to correctly place the food on the best storage spaces.