Results of thermostatic adsorption and desorption experiments indicated that adsorption of boron by acid purple soil was fitted by frendlich equation,and the values of K related to adsorption strength in the equation showed that the adsorption strength of boron was weak by sample soil.Addition of Zn in the solution had little effects on the adsorption and desorption of B,but reduced the adsorption strength of B.By the contrast,the adsorption amount of B increased by 191% as well as the adsorption constant K while the desorption of B decreased by 6.4% as adding Ca in the solution.The best fitness of the Elovich equation was achieved about describing the adsorption kinetics and the equation parameter(b) supposed that Ca affected B adsorption velocity much stronger than Zn did.The constant b value for different treatments followed in the order B Ca>B Ca Zn>B Zn>B.