Metal-organic frameworks (MOFs), the preferred porous materials，consisting of metal atoms or clusters and organic ligands, showing the higher adsorbability and photocatalytic activity, have been widely exploited in environmental protection and future energy supply. Based on the simulation of plant photosynthesis, MOFs is expected to convert CO2 into a series of hydrocarbon fuels. This article illustrated the mechanism of MOFs photocatalytic reduction CO2.Through the construction of band structural engineering (such as doping, ligand substitution, heterojunction construction) may achieve the capture of stronger light, higher gas adsorption, product selectivity, stability and photocatalytic efficiency；and improve catalytic efficiency through functionalization of synergistic catalytic effect and MOFs structure design. In addition, based on these researches of this area, we make suggestions for the future directions of MOFs photocatalytic reduction CO2.