With　the　target　of　bringing　out　a　sustainable　carbon–neutral　system,　halide　perovskite　materials　have　been　explored　to　fulfil　the　requirements　of　solar-to-fuel　conversion.　Herein,　formamidinium　(CH(NH2)2+)　lead　bromide　quantum　dot　(FAPbBr3　QD)　as　a　novel　of　photocatalyst　is　researched,　which　exhibits　an　excellent　photostability　and　the　optimum　CO　yield　rate　of　181.25　μmol·g−1·h−1　towards　photocatalytic　CO2　reduction　in　the　mixed　solvent　of　deionized　water/ethyl　acetate.　Furthermore,　the　kinetic　features　of　exciton　bleach　and　photoluminescence　spectra　infer　that　FAPbBr3　QDs　have　an　enough　lifetime　to　separate　and　transfer　charges　for　adsorbing　CO2　molecules,　thus　facilitating　the　photocatalytic　CO2　reduction.　This　study　puts　forward　a　reliable　avenue　of　organic–inorganic　hybrid　perovskite　materials　as　efficient　photocatalysts　to　convert　CO2　into　valuable　chemical　fuels.　©　2020　Elsevier　B.V.