Refrigerating aerator

The utility model relates to a refrigerating oxygen-increasing machine for increasing oxygen and refrigerating in the process of transporting living body of aquatic products, which is composed of a machine frame (1), a diesel engine (2) which is installed on the machine frame (1), a refrigerating device (5), a pressurized device (4), a driving device (3), etc., wherein the diesel engine (2) is simultaneously connected with the refrigerating device (5) and a power input shaft of the pressurized device (4) through the driving device (3); fresh air is refrigerated by the refrigerating device (5) and is pressurized through entering the pressurized device (4), and then, the fresh air is sent to a sealed groove so as to increase the oxygen and cool down for water arranged in the sealed groove. The utility model has the advantages of simple structure and convenient use; the utility model is characterized in that not only the refrigerating oxygen-increasing machine can increase the oxygen, but also can cool down, can improve the survival rate in the process of transporting the living body of aquatic products, etc.