Abstract: The objective is to investigate drought-resistant differences of maize varieties at different growth stages. Eighteen maize varieties were used as materials. Four treatments were set including drought stress at three key growing stages, jointing stage (T1), booting stage (T2), silking stage (T3) and the normal irrigating treatments (CK). The drought resistance was identified and evaluated. The results showed that the ASI of the tested varieties extended 1- 6 d in various degrees compared with the control. The ASI of nine varieties prolonged slightly, such as‘Jingnongke728’and‘Jingke968’; that of‘Zhongdan28’and‘Xundan20’were relatively long. After the drought stress, the yield of‘Jingke968’and‘Jingnongke728’were relatively high; that of‘Xianyu335’and‘Zhengdan958’were medium; and that of‘Xundan20’and‘Zhongdan28’were relatively low. It is concluded that the yield level and drought resistance of‘Jingke968’and‘Jingnongke728’ are the highest; those of‘Zhengdan958’and‘Xianyu335’were medium; ‘Liaodan565’ and ‘Jiyuan1’ had poor drought resistance and yield.‘Zhongdan28’was the worst productive and drought sensitive variety.