Soil moisture content is expressed in soil moisture levels，reflecting the most direct and important indicator of drought. Soil moisture forecast to reflect the future development trend of a certain period of agricultural drought，for carrying out the drought early warning，command and leadership at all levels and departments to provide decision-making basis for drought mitigation. In this paper, precipitation，evaporation，wind and other sources of information as influencing factors measured to Excel as technology platforms, creating a multiple regression model for soil moisture prediction. The forecast model creation method is simple, easy to transform and transfer.