Abstract: The transfer and balance of heat during the cold milling of aluminum foil were analyzed. A viewpoint about them was proposed. The surface temperature of aluminum foil was measured in three ways with different open nozzles. With the combination of theory analysis and experiment, the power of heat absorption of the aluminum foil and the working roll was acquired respectively, and the partition coefficient between the aluminum foil and the working roll was also calculated for the first time. The results show that the partition coefficient of the aluminum foil varies from 0.11 to 0.33, while that of the working roll from 0.67 to 0.89. The partition coefficient of the working roll increases with the cooling ability intensifies.