Abstract: The paper studied the water seasonal variation and vertical variation of sandy-leanness farming naked land soil in Xingzheng county Baqian village, Henan Province by soil water menstruated and weather datum analyzed. The results indicated that the seasonal soil moisture variation could divide into four phases: soil moisture relative stabilization phase, slowly consumable phase, mass consumable phase and resumable phase. The vertical variation was that the soil moisture content of cultivate layer was very little, change considerable fast. The soil moisture content of central layer was higher, and the soil transmit very fast, and dry- humid varies range greatness, it also affect by precipitation and drought. The soil moisture content of bottom layer was higher than that of cultivate layer and central layer, it very stabile and abundance.