Abstract: High-yield stability and adaptability are prerequisite to good wheat varieties. Only a variety with characters of high-yield stability and adaptability can be applied to production for a long period, and brings good social and economic benefits. Based on the data of wheat variety regional tests of high fertility group in Guanzhong irrigated area, Shaanxi province from 1997 to 1999, high-yield, stability and adaptability of Xiaoyan 597 were analysed with high stability coefficient and regression coefficient. The results showed that the high steady coefficient of Xiaoyan 597 in the three years is 12.2%, 11.3% and 19.0% respectively, and lower than the contrast. The regression coefficient of Xiaoyan 597 in the three years is 0.84, 1.00 and 0.95 respectively. It is demonstrated that Xiaoyan 597 is better in high-yield and stability than the contrast. It has broad adaptability.