Abstract: Studies on the thermodynamics and kinetics of copper (Cu²⁺) adsorption by phaeozem and burozem showed that that the adsorption of Cu²⁺ by these two soils was increased with the increasing concentration of Cu²⁺ within the range of Cu²⁺ concentrations used in the experiment, but the amount of Cu²⁺ adsorbed and fixed on phaeozem was much higher than that on burozem. When the test Cu²⁺ concentration in adsorption equilibrium was 95mg·kg^-1,its adsorption by burozem was nearly 3720mg·kg^-1, whereas by phaeozem was as high as 6076mg·kg^-1 . Under the highest CuCl₂ treatment of 400mg·kg^-1, Cu²⁺ adsorbed by phaeozem and burozem was 6159.0mg·kg^-1 and 4736.6mg·kg^-1,respectively .The adsorption of Cu²⁺ by the soils could significantly conform to the Freundlich and Temkin equation,while Langmuir equation was not applicable to describe the isothermal adsorption processes of Cu²⁺ by the two soils. The adsorption of Cu²⁺ by the test soils was very rapid, which could reach its balance after 15～20 min. The adsorption within the first 2 min at its beginning stage accounted for 90% of the Cu equilibrium adsorption. The adsorptive rate of Cu²⁺ by phaeozem was decreased more quickly than that by burozem with the time. The two constant equation was the optimal model to describe the adsorption of Cu²⁺ . The other models in point were first order dynamic equations and Elovich equations, whereas parabolic diffusion equations were not suitable ones.