Using the basic theory of heat transfer we analyzed the heat transfer between inside foam box and outside foam box during iced fresh fish distribution and established mathematical model to estimate the ice consumption during iced fresh fish distribution under one-dimensional steady-state condition. Foam box thermal conductivity tests were conducted under 5. The results showed that the values of foam boxes thermal conductivity were among 0.035 6. Through steady-state heat transfer simulation experiments that were conducted under the temperatures outside the foam boxes, which were 5, 15 and 25 respectively, the observed values of ice consumption were used to validate the exactness of the estimated ice consumption model. Mathematical tests showed that the relative deviation between estimated and observed values of ice consumption were in the range of 6.5, mean relative deviation was 11.4, and the bias factor and accuracy factor of ice consumption model were 0.897 and 1.114 respectively. All of these showed that the estimated ice consumption model based on the one-dimensional steady-state heat transfer, can precisely estimate the ice consumption for maintaining the temperature of fish below 1 in foam box and the temperature outside the foam box is invariableness. So the established mathematical model could provide reference for ice addition during iced fresh fish distribution.