Based on data from multi-site tests in Liangshan prefecture, using Finlay and Wilkinson models and estimating interactive effects between varieties and test sites, we analyzed the yield stability and adaptability of eight varieties of quinoa, i.e., Blanca (ν1), Black pixankalla (ν2), Pasankalla (ν3), Xixuan 17-8 (ν4), Long quinoa 1 (ν5), Long quinoa 2 (ν6）, Long quinoa 3 (ν7), and Qing quinoa 1 (ν8) in Liangshan prefecture. The results showed that the yield performance of different varieties differed significantly in different test sites. The ν 4 was a high-yield and stable variety, which showed good yield and adaptability in different test sites. The ν1 and ν5 were high-yield and unstable varieties, which showed good yield performance and special adaptability in suitable environments. The v8, v2 and v6 were high-yield and stable varieties with modest yields but have a wider range of adaptability. The low-yield and stable varieties of v7 and v3 are not suitable for planting in Liangshan region.