Photocatalysis　technology　holds　great　potential　in　converting　CO2　into　value-added　chemicals　and　fuels,　playing　a　significant　role　in　achieving　carbon　neutrality　and　promoting　carbon　cycling.　However,　the　low　charge　carrier　separation　efficiency　of　existing　photocatalysts　limits　their　performance　in　CO2　utilization.　Herein,　a　novel　Sscheme　structured　2D/2D　WO3/InVO4　composite　is　successfully　synthesized　via　hydrothermal　method,　which　maintains　the　high　selectivity　for　converting　CO2　to　CO　under　visible　light　without　the　need　for　noble　metal　cocatalysts　or　sacrificial　agents.　The　optimized　WO3/InVO4　composite　exhibits　CO　yields　of　13.37　mu　mol/g,　which　is　3.36　times　higher　than　that　of　InVO4.　Enhancement　in　photocatalytic　performance　is　primarily　attributed　to　the　meticulously　designed　S-scheme　heterojunction　structure,　which　effectively　achieves　spatial　separation　of　photogenerated　charges.　Furthermore,　the　intimate　contact　between　2D　WO3　and　2D　InVO4　enhances　charge　transfer　efficiency.　This　work　offers　valuable　insights　for　the　design　and　construction　of　novel　S-scheme　heterojunction　photocatalysts.