| NanChang-Liang Tang Area is the political, economic, cultural and commercial center of Jiang Xi province. It has big population density, developed industrial, and the economic development rapidly. However, with the process of urbanization and industrialization seep up and the negligence to the protection of soil resources, the quality of soil environment declined sharply, and the distribution of elements in shallow surface is abnormal, part of the soil has suffered serious pollution. Especially in densely populated, well-developed industrial area, because of industrial pollution and sewage discharge, heavy metal ion content in the surface is far more than the standard value.For this situation, the paper set the cadmium, zinc ion as target, use of laboratory soil column tests to model the migration of cadmium and zinc ion in unsaturated soil in different conditons. And model the migration of cadmium in unsaturated sand clay in 10 years by the GEO-STUDIO software, and get some useful conclusion. Execept this, the author also give some advices about how to prevention and cure the pollution of heavy mental.
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