Converting　CO2　into　hydrocarbons　using　solar　energy　enables　the　seamless　integration　of　efficient　solar　energy　utilization　and　carbon　neutrality,　presenting　an　efficacious　solution　to　simultaneously　tackle　energy　and　environmental　issues.　However,　challenges　arise　in　controlling　the　selectivity　of　reduction　products　hinder　its　industrial　application　due　to　uncertainties　in　decisive　factors.　Given　the　complexity　of　the　photocatalytic　process,　it　is　imperative　to　improve　the　understanding　of　the　thermodynamic　aspects　(including　consideration　of　both　redox　potential　of　photocatalysts　and　light　absorption　properties,　activation　of　stable　CO2　molecules,　similarity　in　reduction　potential　of　products)　as　well　as　kinetic　obstacles　(such　as　high　adsorption　potential,　significant　time　disparity　between　charge　separation　and　transfer,　competition　from　side　reactions).　This　Review　offers　a　comprehensive　analysis　of　the　factors　that　govern　product　selectivity　and　explores　effective　strategies　for　enhancing　catalytic　performance　based　on　recent　advancements　in　photocatalytic　CO2　reduction　to　diverse　chemical　compounds.　These　profound　insights　provide　invaluable　guidance　for　addressing　challenges　in　practical　applications　of　photocatalytic　CO2　conversion.