Abstract: In order to provide some recommendation for the water management and the vegetation restoration on slope-lands, the study on the spatial variability of the soil moisture in different directions and positions on the recultivated slope-land on the Loess Plateau is carried out at the Shenmu ecological station both by the field measurements and the statistical analysis.In this paper,some key issues related to the spatial variability such as scale and time-dependence are discussed. The results show that the mean variation of the soil moisture is weak along the vertical and the N-S direction(perpendicular to slope),while it is moderate when the E-W direction,22D and 32D space are considered.Along the slope,the soil moisture decreases and then increases from its top to the bottom,and the sequence of the magnitude of the heterogeneity is the top-slope>the mid-slope >the bottom-slope;in the N-S direction,the soil moisture increases from the sunshine slope to the shadow slope,and the magnitude of the heterogeneity of the sunshine slope is larger than that of the shadow slope;in the vertical direction,the soil moisture decreases and then increases below the depth of 200cm from the soil surface,and the magnitude of the heterogeneity is significantly positive correlated to the mean moisture of the same soil layer.