The site-energy distribution function offers a method to evaluate heterogeneous properties of sorbents. The sorption of selected acetanilide herbicides on six different soils is examined by using batch equilibrium methods,and sorption data were fitted with the Freundlich equation.The site-energy distributions and mean-value of partitioning coefficients normalized to organic matter for each herbicide on six soils was obtained.The results indicated that the herbicide was firstly adsorbed on the high-energy sites of soil surface when adsorbed at the lower concentration.The herbicide properties can influent the site-energy distribution of soils.The number of sites or the sorption capacity on soils was related to the content of organic matter in soils,the clay also contributed to sorption to limited extent.The hydrophobic binding may be relatively important in the process of the four herbicides adsorbed by soils.