Abstract: In order to grasp the variation of soil water storage in the maize growing season in Shuozhou City and improve the soil water use efficiency, the writer analyzed the variation of soil water storage in maize growth season. It is based on the decked change of soil water storage and related meteorological factors of soil water vertical changes in Shuozhou city growing season soil moisture by relating meteorological data from 1995 to 2015 in Shanxi city of Shuozhou province corn, correlation, soil water storage. The results showed that: the precipitation variation coefficient was more than 15% in the growing season of Maize in Shuozhou City. And the soil water storage increased by about 0.2mm with the precipitation increased by 1mm. The precipitation, the temperature, the relative humidity, the evaporation and other meteorological factors correlated with soil water reached more than 60% between 10cm and 20cm soil layer. The correlation coefficients above 30cm of each layer decreased significantly. Besides the 0-50cm soil water storage curve can be divided into ten day period, consumption, the precipitation in rainy season and Autumn period of soil water stable period the three stages of rapid elimination of dry season soil moisture; in the corn growing season (5-9 months) soil moisture vertical rule each month is similar to that of 0 ~ 20cm soil water storage variation coefficient is above 20%, the influence of meteorological factors on the 30 ~ 50cm layer is larger, the coefficient of variation is below 20%, the precipitation can not penetrate the soil layers, Other meteorological factors had little effect on deep soil, the soil water storage coefficient of variation.