The paper describes the preparation of β-cyclodextrin bonded stationary phase and its characterization by using IR spectrometry,elemental analysis and nitrogen adsorption method at low temperature.Chromatographic performance of the β-cyclodextrin bonded phase was examined by using nitroaniline isomers as samples and CH_3OH/H_2O(40/60,V/V)as mobile phase.The difference Δκ′in retention between ρ-and o-nitroaniline on the β-cyclo- dextrin bonded phase column was found to depend strongly on the column temperatu...