Abstract: In order to select excellent melon varieties suitable for different ecological environments,in this experiment,R language GGE Biplot method was used to analyze the yield data of melon regional test varieties in Heilongjiang Province,to comprehensively evaluate the yield stability and environmental adaptability of melon strains in different test points,and to evaluate the discrimination ability and representativeness of each test point.The results showed that Basu No.2 was a high and stable yield melon variety;Basu No.1 and Longqing No.6 were high and unstable yield melon varieties;Yongtian No.3 and Fuer No.1 were middle yield but poor stable yield melon varieties;Zetianzhuoyue was a low yield and stable yield melon variety;Three test bases Zhaoyuan County,Acheng District and Fularji District had obvious discrimination ability,which could be used to eliminate unstable melon varieties;Fularji District,Ning’an City and Acheng District had strong representativeness,which can be used to select excellent melon varieties;Ning’an City had poor identification ability but strong representativeness;Beilin District had average identification ability and representativeness;Bei’an City had poor identification ability and representativeness.