To analyze and simulate water flow and solute transport in the soil media, conduct catchment hydrological process simulation and optimize related agricultural activities, it is important to understand three-dimensional distribution characteristics of soil water and its temporal variability In this study, by densely installed electrodes at a 3.5m×3.5m square in the field, first, soil resistances were measured at a given time interval Then, based on an inversion algorithm for soil real resistivity and a relationship between soil resistivity and water content, three-dimensional spatial distributions of soil water content were obtained Finally, on the basis of an analysis about the soil water content, three-dimensional spatial distribution characteristic of soil water and its temporal stability were investigated The results show that the spatial distribution of soil water content at the experimental site is heterogeneous and anisotropic However, this heterogeneity is not a random process; it has a spatial distribution pattern This distribution pattern remains the same before and after the rainfall, indicating temporal stability of the spatial distribution characteristics of soil water.