Abstract: According to the study on the Soil water diversification character in a cross section in Zhifang small watershed in loess hilly area, the following conclusions was drawn: ①As a population, the content of water in shady slope is higher than in sunny slope and in the lower slope is higher than in the up slope, so the landform is the deciding factor, while the vegetation is also important.②The content of water in arboreal grounds is the lowest, the shrub ground′s is better and the grass ground′s is best. So the feasible vegetations are grass ground and shrub ground in loess hilly area.③The growing of vegetations weaken the effect of slope′s change. The contents of robinia pseudoaccia are similar in shady slope and sunny slope, lower slope and up slope. The great water consumption of well grown caragana korshinskii make the content of water in shady slope and lower slope lower, and the grass community in sloping land have a higher water content.④There are dried soil layer in Zhifang small watershed except the grass vegetation in shady slope, but the vegetation can grow well, so the dried soil layer is very normal in well vegetation recovery area.