The production of hydrocarbons by hydrogenation of CO_2 is one ofthe most challenging aims in C_1 chemistry. In this work, we studiedCO_2 hydrogenation over iron catalyst supported on carbon under differentreaction conditions. The products of CO_2 hydrogenation on Fe/C catalyst weremainly hydrocarbons including more than 70% C_2~+ hydrocarbons. When thereaction temperature and pressure were elevated,the CO_2 conversion and theselectivity to hydrocarbon(HC) products increased. It was also found that theaddition of Cu onto Fe/C catalyst has an apperent effect on the activity andselectivity of Fe/C catalyst. It increased the CO_2 conversion and the selectivityto total HC Products to 62.8% and 100% respectively. The results obtainedfrom TPR and M(?)ssbauer spectroscopy proved that the iron was reduced mucheasier in Fe-Cu/C than in the Fe/C catalyst. The production of hydrocarbons by hydrogenation of CO_2 is one of the most challenging aims in C_1 chemistry. In this work, we studied the evolution of CO_2 hydrogenation over iron catalyst supported on carbon under different reaction conditions. The products of CO_2 hydrogenation on Fe / C catalyst were mainly used hydrocarbons including more than 70% C_2 ~ + hydrocarbons. When thereaction temperature and pressure were elevated, the CO_2 conversion and theselectivity to hydrocarbon (HC) products increased. It was also found that theaddition of Cu onto Fe / C catalyst has an apperent effect on the activity andselectivity of The results obtained from TPR and M (?) Ssbauer spectroscopy proved that the iron was reduced mucheasier in Fe-Cu / C than in the Fe / C catalyst.