Abstract: 【Objective】The physiological character of resistance to drought of maize was studied, and was to take evidence for breeding maize varieties of resistance to drought.【Method】In the research ,as the test material the maize varieties consisted of Zhengda619 and Nongda108 were watered once per interval 4d,8d,12d,16d respectively, and were analyzed on the following index of their leaf: The chlorophyll content, Pro content, MDA content and activity of SOD, POD.【Result】The result is as following: As the water stress was enlarged, the Pro content, MDA content and activity of POD were high, while the chlorophyll content and activity of SOD were low. and the deterioration of these index of Zhengda619 were more than ones of Nongda108 obviously.【Conclusion】The index such as content of Pro ,MDA and activity of SOD, POD could be taken as the reference to breeding maize varieties of resistance to drought.