The transportation and migration mechanism of organic contaminants in the soil was analyzed. Based on the above, a model of non-equilibrium adsorption dynamics behavior of organic contaminants transport has been established; and the numerical method of solving the optimization model has been presented. The model is used to predict the contaminated process of leachate transport. The effects of the parameters such as rainfall, layer of garbage, rate of water content in model are studied. In conclusion, under the certain pollutant source, the enlargement of rainfall and pollution soil layer will ...