The coffee waste is a kind of biomass resources. In this study, activated carbons were successfully prepared from coffee waste by chemical activation with Zinc Chloride. As a result of chemical activation, the most important parameter in chemical activation of coffee char was found to be chemical ratio of activation agents. N₂-BET surface areas and total pore volume of coffee char by chemical activation using Zinc Chloride(100-300%) were measured as about 1024∼1483m²/g and 0.51∼0.81cm³/g, respectively.