Abstract: To analyze the interaction relationship between the genes of main agronomic characters of rape and the environment in Huanghuai Regional Trial Sites, and to evaluate all the trial sites, GGE biplot method was used to analyze the agronomic characters of rape in the National Huanghuai Regional Trials from 2010 to 2015. Trial sites were clustered based on the interaction results between the genes of three yield components and environment, and they were evaluated according to the discriminating ability and representativeness. The results showed that the yield, pods per plant, plant height and effective branch height at Fuping Site were the best. 1000-seed weight, yield per plant, primary branches and pods of main raceme at Huaian Site were the best. Seeds per pod and pods density of main raceme at Chenxian Site were the best. Based on both of pods per plant and 1000-seed weight, Suzhou Site was clustered into one group; and the discriminating ability and representativeness of Yangling Site were the highest. Suzhou Site was classified into another variety ecoregion. Yangling Site was the most ideal site in Huanghuai Region.