Abstract: A β-cyclodextrin cross-linked magnetic chitosan, prepared by the method of graft copolymer, was used to adsorb U(Ⅵ) from aqueous solution. The effects of initial solution pH, adsorption time, temperature and other factors on U(Ⅵ) removal rate byβ-cyclodextrin cross-linked magnetic chitosan were studied. The adsorption experimental results show that the adsorption equilibrium time of U(Ⅵ) ontoβ-cyclodextrin cross-linked magnetic chitosan is 60 min, and low temperature and high adsorbent dosage are beneficial for the adsorption. The optimum pH for the adsorption ranges from 3.0 to 6.0. The desorption experimental results show that the U(Ⅵ) adsorption removal rate is reduced by only 7.41% after desorption of U(Ⅵ) in theβ-cyclodextrin cross-linked magnetic chitosan for 5 times. SEM results show that the surface ofβ-cyclodextrin cross-linked magnetic chitosan is rough. Furthermore, the IR analysis shows that the —OH and —NH₂ are the main binding sites on surface ofβ-cyclodextrin crosslinked magnetic chitosan, and its original structure has no significant change after adsorption of U(Ⅵ).