| Coal mining wasters is the largest source of industrial solid waste in China. With the action of leaching by rain and water, some hazardous minor element will be dissolved completely or partly and separated from coal mining wasters into water or soil environment. Consequently, they would deteriorate water quality, destroy soil function and influence ecology development and human health.Sequential extraction and static simulation, which associated to X-ray diffraction (XRD), transmission electron microscopy (TEM), neutralize potential (NP) and acid potential (AP) comparative, were used in the studies of speciation distribution of some hazardous element in coal mining wastes from Huainan Xinzhuangzi. Base on the simulation experiments, hazardous minor element from coal mining wastes are studied in relation to their forms of occurrences and contents in coal mining rocks. Results have shown that the lixivium concentration affected by leaching times, pH, leaching temperatures, and grain diameter values of the media and most parts of the hazardous element are stable. Under different circumstance the hazardous element shown differently influence.Considering the environmental effect of coal mining wasters, the character, environmental influence, meanwhile the target, proceeding mode, and the history and current conditions of abandoned mine area theory was analyzed and explained in this paper. Some difference and disparity reclamation was discussed between China and other country, and then point out the progress direction of soil reclamation research. According to the present problems of Huainan diggings, some reclamation strategy was put forward.
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