A novel naringin imprinting CS@ SiO2( I-CS@ SiO2) was prepared by using chitosan covering on silicon dioxide as a functional polymer,and characterized with X-ray diffraction( XRD) 、FT-IR、SEM and so on. The binding properties were discussed by equilibrium binding experiment method. Experiments show that the adsorption characteristics of I-CS @ SiO2are better than that of non-imprinted polymer. Adsorption isotherms of I-CS@ SiO2to NG accord with Langmuir adsorption isothermal equation,with Langmuir and Freund...