The invention relates to the technical field of household appliances, in particular to a foaming production method and a foaming production line for refrigerator bodies of refrigerators. According to the foaming production method for the refrigerator bodies of the refrigerators, a sensor is arranged on each foaming machine and can read a refrigerator body barcode and be matched with the set model of the foaming machine, pre-assembling refrigerator bodies on a refrigerator feeding platform are made to be matched with at least one foaming machine in sequence until the pre-assembling refrigerator bodies are foamed on the matched foaming machine, and therefore foaming of multiple specifications is completed on the same production line. The foaming production line for the refrigerator bodies of the refrigerators carries out production by adopting the foaming production method for the refrigerator bodies of the refrigerators. The production line comprises the refrigerator feeding platform, the multiple foaming machines capable of sliding relative to the refrigerator feeding platform are further arranged on the outer portion of the refrigerator feeding platform, and manipulators used for taking out the pre-assembling refrigerator bodies from the corresponding foaming machines and placing the pre-assembling refrigerator bodies into the corresponding foaming machines are further arranged between the refrigerator feeding platform and the foaming machines; each foaming machine is provided with the corresponding sensor which can read the refrigerator body barcode and be matched with the set model of the foaming machine.