Abstract: Investigation on stability of wheat main traits, including period of duration, plant height, number of ears per hectare, garins per ear, percentage of ears, 1000-grains weight and yield of five new mianyang-wheat lines were carried out using additive main effects and multiplicative interaction (AMMI) model in different sites of Sichuan province. Objective of this study was to choose the optimum new wheat lines for Sichuan province. The results showed that effects of genotype on period of duration, plant height, garins per ear and 1000-grains weight were greater than that of environment and genotype by environment interaction (G×E), but the effects of environment on yield was greater than that of G×E and genotype, which percentage were 81.9%, 12.3% and 5.8%, respectively. The highest yield among genotypes at seven sites were MY1227-185（6093 kg/hm2）and ML2652（6082 kg/hm2）, while the lowest yield was Chuanmai107 (5202 kg/hm2), which were significant at 1% level. The best stability were (Di≤0.42) ML2652, ML1131-95 and MY1227-185, which higher than ML1403-84 (Di=0.45), MY68942 (Di=0.75) and Chuanmai-107 (Di=0.85). In consideration of main traits, stability and yield in five new wheat lines, MY1227-185 and ML2652 with the highest yield and stability could be recommend to improve wheat yield and stability of Sichuan province.