Abstract: In order to screen the new canna varieties suitable for plantation in Guangxi， the GGE biplot was used to analyze the yield stability and test site representatives of five canna varieties in four different altitude regions. The results showed that Xingyu 3 was a type of high and stable yield. The stability of Xingyu 2 was good with high yield. The yield of Tianlin canna was the lowest with poor stability. The yield of Mashan canna was higher， but its stability was poor. The special adaptability analysis of varieties in the test sites showed the special adaptability of Xingyu 3 was the widest. From the yield point of view， the performance of Xingyu 3 was good， followed by Xingyu 2， which should be greatly promoted. Tianlin and Dahua sites had the best discrimination， while Duan site had the best representativeness.

Key words: GGE biplot, canna varieties, yield stability, site representative