In this paper, variation of physic-chemical properties of aeolian sandy soil on a subsided slope in Bulianta coal mining area located at southeast Mu Us Desert were studied. Compared with the control area, the subsided area significantly experienced loss of soil moisture within the two years after subsidence (p<0.05), increase in soil porosity (p< 0.05) and decrease in bulk density and hardness of the aeolian sandy soil (p< 0.05) in the upper layer along the fringes of the subsided area 2 years after the subsidence, and decline in total N and total P (p< 0.05) in sections where cracks formed. However, total K and organic matter did not vary much (p> 0.05) in the subsided area. A scatter diagram of the values of the first 2 principal components of the sample plots in the studied area were plotted out by means of PCA, reflecting comprehensive variability of the physic-chemical properties of the sandy soil after the subsidence and quality of the soil was assessed.