[Objective] To explore the effects of rice and rapeseed straw returning on the adsorption and desorption characteristics of Cd(Ⅱ) in straw returned soils, such as Shenqiao red soil(SQ), Chaoshan contaminated red soil(CS), and Xinqiao paddy soi1(XQ), the effects of straw kind and straw amount was studied. [Methods] With incubation method, a series of experiments of isothermal adsorption were conducted to compare the impact of straw returning on Cd adsorption and desorption to the three kinds of soils. [Results] (1) The straw returning induced a remarkable increase in the soil absorption of Cd(Ⅱ), and there were significant differences among different treatments in three kinds soil(p < 0.05). Especially for XQ, returned straw promoted the Cd(Ⅱ) adsorption capacity obviously than that of the red soil. As compared with those of the control, the Cd(Ⅱ) adsorption capacity of total rapeseed straw returning treatment(RP1) and of half rapeseed straw returning treatment increased by 9.30% and 10.47%, respectively. Equations of Freundlich and Langmuir and Temkin all can be used to fit the adsorption isotherms for Cd(Ⅱ) in SQ and CS, but Langmuir equation performed better with a correlation coefficient higher than 0.990 9. While for XQ, the Temkin equation could be better applied to describe the adsorption of irregular surface. (2) In addition, the Cd(Ⅱ) desorption amount and desorption rate in all treatments increased with the Cd(Ⅱ) adsorption increasing. Straw returning reduced the amount of soil Cd(Ⅱ) desorption, in particular, minimum Cd(Ⅱ) desorption of three soils were all found in total rape straw returning treatment. [Conclusion] The impact of straw returning on adsorption-desorption characteristics of Cd(Ⅱ) showed significant differences among different soils, rapeseed straw returning treatments can enhance the specific adsorption of Cd(Ⅱ) and effectively reduce the ecological risk of cadmium.