Abstract: By using the data of the latitudes, altitudes and the distances to coastline in the 66 weather stations, the correlation and regression analysis were done between those data and the lowest temperature that occurred once 10 years. The effects of geographical factors on the lowest temperature were studied, the distribution characteristics of the lowest temperature in the southeast of Fujian province were simulated, and thereby the climate freezing sections of orange were done. The countermeasures of avoiding freezing of orange were put forward also. The results showed that: the GIS that used to simulate the distribution characteristics of climate freezing sections of orange in the southeast of Fujian province were preferable. The distribution characteristics were that the freezing sections that were the most optimum planting section gradually became the possible ones from the southeast to the northwest, and the disagree ones did not exist; the lowest temperature was basically correlated to the latitudes in the regions.