In this experiment, cyclodextrin cross-linked magnetic chitosan (CCMC) microsphere was prepared, glutaraldehyde was chosen as crosslinker, Cyclodextrin and chitosan was synthezied. To observe the influence factors of adsorption and obtain the optimum condition, the adsorption of copper ions by CCMC was explored under the different pH, initial concentration, temperature, reaction time and so on. The results indicated that CCMC had a high percentage removal of Cu2++, optimum adsorption was observed at pH 5.0. The adsorption rate of Cu2+ on CCMC was quick and the percentage removal reached beyond...