【Objective】It is well known that some fine particles of the soil carry charges, which are basically concentrated on soil colloids. The charges on the soil surface account for a series of physical, chemical and physiochemical properties of the soil. Surface potential, surface charge density, surface electric field intensity, specific surface area and surface charge number are important property parameters of soil colloidal particles. The researches on charge properties and interactions of charged surface with ions, electrons and protons are the foci of the study on soil electro-chemistry. Differences in surface charge properties directly affect surface chemical and physicochemical mechanisms of the soil. Therefore, it is of important significance to have accurate understanding of soil surface electrochemical properties to rational utilization of soil resources. However, it is still unclear how soil surface charge properties evolve with vegetation restoration in the Ziwuling area. 【Method】For this study the method of combined analysis of surface properties was applied to measure surface potential and surface charge density of the soils varying in vegetation in the Ziwuling area. This method can be used to get surface potential and surface charge density without the need for the data of specific surface area, thus making easier to measure surface charge properties. Correlation analysis and redundancy analysis were adopted to explore effects of basic physical and chemical properties of the soil on its surface charge properties. 【Results】Results show that with the vegetation evolving in the Ziwuling area, physical and chemical properties of the soil gradually improved; soil bulk density and calcium carbonate content decreased, varying in the range of 1.04~1.27 g•cm^-3and 80.09~149.95 g•kg^-1 and being 1.16 g•cm^-3 and 113.52 g•kg^-1 on average, respectively; contents of organic carbon, total nitrogen and clay increased, varying in the range of 7.12~17.84 g•kg^-1,0.94~1.16 g•kg^-1and 18.26~22.10%, and being 12.19 g•kg^-1,1.24 g•kg^-1 and 20.52% on average, respectively; and surface charge properties of the soil particles in the soil altered too, with surface charge number, specific surface area, and surface charge density increasing, varying in the range of 10.88~19.85 cmol•kg^-1, 40.67~61.71m²•g^-1 and 0.22~0.31c•m^-2, being 16.18 cmol•kg^-1, 54.88m²•g^-1 and 0.28c•m^-2, on average, respectively and surface electric field intensity reaching as high as 10⁸ V•m^-1 in order of magnitude. Soil clay and organic carbon content are the main factors affecting surface charge properties, explaining 62.5% and 27.9% of the changes, respectively. In terms of impact on surface charge properties, soil properties displayed an order of clay > organic carbon > sand > total nitrogen > C/N > silt > calcium carbonate > pH.【Conclusion】The findings of this study have deepened our understanding of the surface charge properties of the soil in the Loess Plateau, and provided a theoretical basis for better explaining the microscopic processes and macroscopic phenomena occurring in the soil with vegetation restoration.