Abstract: Analysis on the cooling process of fruits and vegetables is very important for the refrigerator designing, arrangement of its refrigerating technique and the analysis of its quality change during refrigerating. In this paper, the cooling process of fruits and vegetables in natural cooling resource building and its effective factor were analyzed by finite element method and the regressive formulas for predicting cooling time were put forward. The research results showed that the relationship between cooling time and radius of fruits and vegetables, beginning temperature and reversal coefficient of convective heat transfer is linear one, the relationship between cooling time and environmental temperature is parabolic one.