Adsorption of thiophene,benzene and octane on NaY and CeY zeolites at different temperature was studied using Intelligent Gravimetric Analyzer(IGA). The results showed that saturation loadings of thiophene on NaY and CeY were similar at the same temperature;loadings of thiophene were higher than that of benzene and 1-octane;saturation loadings of benzene and 1-octane were remarkably lower on CeY zeolites than on NaY zeolites.The selectivity to adsorption of thiophene on CeY was superior to that on NaY.