Abstract: In order to provide the theoretical reference to the reported loss of the cultivated land, this paper studied the law of soil degradation caused by coal mining in mining areas with high ground-water level. Through field monitoring and laboratory analysis, this paper studied the moisture content, pH, nutrient content, enzyme activity of the soil in different locations around the subsidence ponding.The results showed that the soil around the coal mining subsidence ponding was affected by the groundwater and the lateral seepage, the soil fertility presented deposition effects as it was at the bottom of subsidence slope.For soil, its physicochemical characteristic affected its enzymaticactivity. Soil saccharase and organic carbon showed the same regularity as urease and total nitrogen. Mining subsidence and ponding changed the characteristics of soil. This research was of great significance for guiding land reclamation of the mining area and safeguarding the state grain in safety.