Abstract:ea of Yongding, 93 topsoil samples from 3 typical coal mines were collected. The contents of Cd, Pb,Zn, Cu and Cr in the samples were determined by microwave digestion-atomic absorption spectropho⁃tometry. The enrichment factor method, Nemerow index method and potential ecological risk indexmethod were used for analysis and assessment. The results showed that the order of comprehensive pol⁃lution index and enrichment degree was Zn>Cd>Cr>Cu>Pb. Based on the compound ecological risk in⁃dex, 2.2% of samples belong to medium risk and 97.8% belongs to slight risk. There was a very signifi⁃cant positive correlation between any two elements in Cu、Cr、Pb and Cd. Close-