Abstract: Activated carbon was modified with loading copper by roasting-impregnated method． The dynamic adsorption of single component ( toluene or ethyl acetate) and bicomponent ( toluene and ethyl acetate) on the modified activated carbon were investigated． The results showed that the best adsorption performance was observed with AC2． Concretely，for the single component system，the adsorption capacity on the AC2 compared to the unmodified one，increased 29. 7% for toluene and 21. 3% for ethyl acetate，respectively． Meanwhile，the breakthrough time were also delayed by 19. 3% and 18. 6%， respectively． The same trend that the adsorption capacity increased on the modified activated carbon，was also found on bicomponent adsorption increased 19. 4% for toluene and 33. 0% for ethyl acetate． The analysis of BET，SEM，FTIr and XrD indicated that the surface area and total pore volum increases of activated carbon modified by copper，and the complexation of copper and VOC was the main reason．