Ultrathin　boron　carbon　nitride　(BCN)　nanosheets　as　fascinating　candidates　for　advanced　photocatalysis　have　aroused　broad　attention　due　to　their　highly　stable　physicochemical　characteristics　and　potential　chemical　reaction　carriers.　However,　its　catalytic　efficiency　is　ultimately　limited　by　the　sluggish　kinetics　of　surface/interfacial　photoexcitation　charges　and　visible　photons　absorption.　Herein,　we　report　the　exquisite　design　and　construction　of　hierarchically　layered　heterostructures　BCN-ZnIn2S4　that　involve　solution-processed　surface　growth　of　ZnIn2S4　subunits　on　the　ultrathin　sheet-shaped　BCN　nanostructures.　The　intimate　interface　contact　of　BCN　and　ZnIn2S4　architectures　accelerate　the　separation/mobility　of　light-induced　charges,　as　well　as　provides　more　active　sites.　In　addition,　the　highly　visible　light　response　of　the　ZnIn2S4　component　resulting　from　a　suitable　bandgap　structure　is　favourable　to　the　effective　visible　photons　adsorption　and　utilization.　The　optimized　BCNZnIn2S4　composite　remarkably　enhanced　the　photo-redox　efficiency　in　the　reductive　CO2　deoxygenation　(COreleasing　rate　of　38.6　mu　mol　h-1)　and　oxidative　aromatic　alcohols　dehydrogenation　(conversion　of　81.6%)　under　visible　light,　which　is　386-fold　and　2-fold　enhance　performance　compared　to　the　pristine　ultrathin　BCN　nanosheets,　respectively.