According to the measured soil moisture,the agricultural meteologic data and the satellite monitoring data of the wheat season of the North China Plain in the years1993—1995,a regional soil moisture model is tested to simulate the process of the dynamic change of soil moisture and its related elements and to overcome the defect that former remote sensing model of soil moisture can only determine the soil moisture content but not the structure of water amount. This test has gained satisfactory effects. It successfully uses the remote sensing data as the input of the model and reaches the goals of monitoring the soil moisture conditions,analysing the hydrology and water conservancy and estimating the crop production based on remote sensing. At the time of exporting the structure of water amount,the model can also provide the information about the impacts of human activity on the water environment.