In this paper, we studied the enrichment characteristics of lead in soil within Xinqiao sulfide mining area, Anhui province. The sources of the metal Pb in the soils were traced using Pb isotopic compositions . The results showed that Pb was enriched in most of the topsoil (0～20cm) moderately, and not enriched in the deep soil (below 20cm) obviously. Pb isotopic compositions of the soil suggested that Pb of the soil was a binary mixture and was contributed from both natural and anthropogenic processes. The naturally sourced Pb might be contributed from both weathering of the quartz monzonite and granodiorite, and most of the anthropogenic Pb came from pyrite, chalcopyrite and galena ores in the mining area. In topsoil, the anthropogenic Pb varied from 73.6% to 98.7%, and in the deep soil there were 61.4%～76.1% naturally sourced Pb.