At the south edge of the Tengger Desert,chose the moving dune,enclosure for 5 years,enclosure for 15 years and enclosure for 25 years of the restoration successive series,It represents the different stages of reversion process of desertification.The soil chemical properties of the decertified land were studied in reversion process of desertification with the method of substituting time with space.The results showed that the soil pH,soil electrical conductivity,soil available potassiumat,soil available phosphorus,soil total nitrogen and soil organic matter showed varying degrees of fluctuation changes at depth of 0-300 cm,but the mean valuehave increased continuously.Surface-soil pH gradually decreased in reversion process of desertification,but surface-soil electrical conductivity and soil fertility on behalf of soil available potassiumat,soil available phosphorus,soil total nitrogen and soil organic matter gradually increased in reversion process of desertification,and the overall difference of the surface soil chemical properties in various stages was significant.It is concluded that the soil chemical properties gradually develop in the benign direction in reversion process of desertification at the south edge of the Tengger Desert.