Abstract:Growing attention has been paid to the study on dissolved organic matter (DOM), a complex mixture of" similar" organic compounds, in the fields of environmental science, ecological science and soll science since the chemical,physical and biological behaviors of many micronutrients, heavy metals and organic pollutants in soil-plant system are concerned with DOM. The sources. components,fractations, transformation and transport of soll DoM, and the relations between soil DOM and pollutants are reviewed in the presented paper. Although much more studies on soil DOM should be conducted to understand the behaviors of soil DOM and its relations to chemicals in the future. it is clearly indicated that the concentration of soil DOM is very low, usually less than several percentages of the total soil organic matter. is an important active chemical component in soils. Heavy metal adsorption is reduced with the presence of DOM. Researchers widely believe that the solution, desorption, transport, leaching, bio-accumulation and some other processes of pollutants are enhanced predominately due to their complexation with DOM and/or adsorption on DOM. Larger amounts of potentially pollutants will be leached into underground waters and surface waters or accumulated in foods if the pollutants coexist with DOM. Many elements and organic compounds in soil waters have solubility much higher than expected from theoretical calculations based on their solubility in pure water. Presumably there may be a mechanism of dissolution by DOM, but no document validates the hypothesis.