Stability of yield and fiber quality traits was studied with 11 hybrid cotton varieties in seven experimental points, such as Huan Agricultural University, Lixian county, Datonghun county, Cotton Insititute of Hunan Province, Nanxian county, Junshan county and Anxiang county in 2009 and 2010. The results showed that the variation coefficients of boll number and mi- cronaire value was bigger, while those of lint percentage and uniformity were smaller. The significant positive correlation (p 〈 0. 01 ) existed between lint yield and boll number...