Abstract: [Objective and Metnod]This paper comparatively analyzes the characteristics of the spatial variability of soil profile average water and salt content in the bare land and vegetational area using the typical salinizational area of oasis-desert ecotone in Qitai as the study area.[Result]The results showed that the soil water and salt content of bare land and vegetational area obey normal distribution; soil salinity belongs to moderate variability with a stronger spatial autocorrelation. Soil moisture variability in the bare land belongs to weak variability with moderate intensity of the spatial autocorrelation; vegetational area belongs to medium (weaker) variability with strong spatial autocorrelation. Bare land correlation distance is about 1/10 of vegetational area. With soil depth increasing, the activity changes of soil salinity in bare land and vegetational area are as follows: active layer, sub-active layer and stabler layer. Soil moisture change and its relationship with salt content are inconsistent, the surface of bare land affected largely by random factors is the most active and its correlation with salinity is also poorer,while the vegetation area in the middle and lower layer (60-80 cm) is the most active, which shows highly positive correlation with the salt. [Conclusion]Affected by random factors and structural factors (such as vegetation, micro-topography, etc.), the spatial variability of soil water-salt in the two vegetational coverages shows obvious difference and reflects significant active force and reactive force that the vegetation affects the water and salt distribution and the random factors of water and salt distribution.