Field experiments of four locations were conducted in 1999 and 2004 in Zhangye city of the Western Yellow River Corridor of Gansu province. Experimental maize varieties 608, Jiudan 3 and Zhongdan 2 belongs to different maturation groups. The elevations of four experimental locations is 1506.5,1706.5,2000.0 and 2231.5 m respectively. The results indicated that maturation was delayed gradually with the rise of elevation under same sowing condition. There was a significantly positive correlation between elevation and days of sowing to maturation for the maize varieties. Growth stage delayed 5 - 6 d with elevations raising per 100 m. The positive correlation had been shown between the elevation and days of sowing to elongation. There was a negative correlation between the elevation and plant height of maize varieties.