In the present paper the concept of the geo-zonal and unzonal distributions of soil water resouces is defined and the variation rules of the distribution of soil water resources in loess region,China is analyzed.Under homogeneous condition of vegetation and landfonn there is a geologically zonal distribution law which soil water content decreases from south to north and increases from the mountain top to bottom in loess region,China.In the ogeneous soil water zone the differences in land-types,variation of slope direction and mountain slope gradient soil water content,namely unzonal distribution of result in the local water resources.