In　this　study,　g-C3N4　nanosheets　coated　UiO-66　nanohybrids　were　fabricated　via　a　simple　solvothermal　method.　The　physicochemical　parameters,　structural　and　electrochemical　properties　of　g-C3N4/UiO-66　nanohybrids　(CNUO-x)　were　investigated.　The　nanohybrids　were　systematically　characterized　by　XRD,　FT-IR,　TGA,　TEM,　SEM,　EDS　elemental　mappings,　XPS,　NZ　adsorption-desorption　isotherms,　PL　and　DRS.　It　was　found　that　the　addition　of　moderate　g-C3N4　could　enhance　the　separation　and　migration　rate　of　photo-induced　charges,　consequently　leading　to　the　increase　of　photocatalytic　efficiency.　The　CNUO-1　nanohybrid　exhibited　better　photocatalytic　activity　for　the　oxidation　of　Rh　B　under　visible　light　irradiation,　and　displayed　about　6.0　and　3.3　times　faster　than　that　of　g-C3N4　and　UiO-66,　respectively.　Meanwhile,　the　nanohybrid　showed　excellent　stability　and　reusability　in　four　cyclic　experiments.　Finally,　the　increased　photocatalytic　reaction　mechanism　was　also　proposed.　center　dot　O-2(-),　h(+)　and　center　dot　OH　were　further　found　to　be　the　main　active　contributors.