In　this　paper,　a　visible　light-driven　polymeric　carbon　nitride　(PCN)/(Pt)/nano-spherical　MoS2　photocatalysts　was　prepared　using　a　self-assembly　method.　The　structure　of　photocatalysts　was　explored　by　FT-IR,　XPS,　XRD,　BET,　SEM　and　TEM.　Meanwhile,　the　energy　band　structure　and　electron　hole　separation　efficiency　were　also　analyzed　by　UV–Vis　and　PL　spectra.　In　addition,　the　photocatalytic　performance　of　photocatalysts　were　tested　by　photocatalytic　degradation　of　Rhodamine　B　and　photocatalytic　hydrogen　evolution.　The　results　showed　that　PCN/2.0%MoS2　showed　the　best　photocatalytic　performance,　and　the　degradation　rate　of　Rhodamine　B　could　reach　98.39%　within　150　min.　Besides,　the　introduction　of　Pt　nanoparticles　significantly　improved　the　photocatalytic　activity.　The　degradation　rate　of　Rhodamine　B　reached　100%　within　150　min,　and　the　rate　of　photocatalytic　hydrogen　production　of　PCN/Pt/MoS2　system　was　increased　by　21.3%　over　the　PCN/2.0%MoS2　system.　The　separation　mechanism　of　electron　and　hole　is　Z-scheme　mechanism　and　the　main　active　substances　for　photocatalytic　degradation　were　·O2−　and　h+.　©　2022