Abstract: The paper aims at the period characteristics and phase threshold of the regional drought disaster formation of spring maize. In the typical arid area wuwei，the water consumption of the same breed is studied by the comparison of the different water control treatment. The results showed that the maize water consumption intensity was small in the early stage, in the middle stage it increased gradually, and decreased in the late stage. The maximum of soil water storage capacity was reached at sowing and seedling stage, while in jointing stage the soil water storage capacity reduce significantly. The plant transpiration dominate the consumption of water in tasseling stage, when the soil water storage capacity increased with the precipitation. The soil evaporation and plant transpiration are all intensified due to the hot weather in milk ripeness stage, thus the soil water storage capacity decreased to the minimum in the whole growth period. The long drought stress made the soil extremely arid, and the upper and lower layer of soil have the similar water storage capacity per weight. The drought stress doesn’t impact the plant height as strong as it impact the water storage. The influence of drought stress to plant growth of maize was strongest in jointing stage and weakest in seedling stage, the tasseling and silking stage gets the middle.