Under mild conditions, it is of far-reaching significance to use CO2 and CH4 as basic carbon sources to produce high value-added liquid chemicals. However, due to thermodynamic constraints, this has been a huge challenge. The emergence of low temperature plasma technology provides an effective means to solve this problem. In this paper, CuFe/γ-Al2O3 catalyst was successfully prepared, and the mixture of CO2 and CH4 is efficiently converted into high value-added liquid products at room temperature and pressure.The experimental results show that the introduced metal Cu and Fe provide active sites for the subsequent reaction and promote the coupling of the products, so that the CO in the reaction system is effectively utilized, thereby promoting the formation of complex products such as C2+ liquid products. The conversion of CH4 reach 25.3%, the conversion of CO2 reach 26.3%, and the overall liquid product selectivity reached 59.4%. Ethanol as the main C2 + liquid product, the selectivity reach 12%, and the proportion of alcohol liquid products in the total liquid products reached 80%. The research results provide a good reference and guidance for the conversion and utilization of CO2.