To investigate the desorption characteristics of atrazine in different soils contaminated by atrazine, the desorption behavior and its affecting factors were studied by batch balance method in albic soil, black soil, and saline soil. The results showed that the process of atrazine desorption in the three soils experienced three stages:rapid desorption, slow desorption and finally desorption equilibrium, and the equilibrium time was 12 h. Freundlich equation could better describe the desorption isotherm curve of atrazine in three soils (R²>0.969). ΔG<0,ΔH>0,ΔS>0. This indicated that desorption was a spontaneous and disordered process of heat absorption. Atrazine had the highest desorption rate in saline soil, followed by black soil and albic soil. Increasing the pH value of soil or adding biochar could reduce the desorption capacity of atrazine in soil.