The physico-chemical properties of carbon-supported Cu catalysts used for producing dimethyl carbonate were investigated. The specific surface area decreases with increase in the thermal treatment temperature and the Cu content of the catalyst. The molar ratios of OH/Cu also have effect on the specific surface area of the catalysts and their activity. An uniform dispersion of the Cu component and a proper Cu content and molar ratio of OH/Cu are required in order to obtain a high conversion of methanol and high selectivity to DMC.