In this paper,the batch isotherm experiments were performed to study the characteristics of adsorption and desorption of 2,4-DCP on three sediments with different physical-chemical characters,which were collected from the Songhua River in Harbin,Dalianhe and Jiamusi. Experimental results demonstrate that the adsorption of 2,4-DCP in three sediments can be completely balanced in 24 h. The adsorption isotherm is nonlinear and fitted with the form of the Freundlich equation under experimental condition(R2 >0. 92). The adsorption capacity of sediment follows the order: Jiamusi sediment > Dalianhe sediment > Harbin sediment. The value of HI follows the order: Harbin sediment > Dalianhe sediment > Jiamusi sediment. The desorption process of 2,4DCP has an obvious hysteresis,and all of them are less than 1. Furthermore,the co-relationship between HI and the physical-chemical characters of sediment is positive(R2 >0. 444).