New　visible-light-sensitive　Cu2ZnSnS4　(CZTS)/La2Ti2O7　hetero-junction　photocatalysts　have　been　successfully　prepared　via　a　hydrothermal　method　and　in　situ　growth　process.　The　catalysts　were　characterized　by　X-ray　powder　diffraction　(XRD),　scanning　electron　microscopy　(SEM),　transmission　electron　microscopy　(TEM),　and　ultraviolet-visible-near-infrared　(UV-vis-NIR)　spectrophotometry.　The　CZTS/La2Ti2O7　material　exhibited　a　higher　photocatalytic　activity　than　pure　La2Ti2O7　and　CZTS　for　the　degradation　of　RhB　under　UV　and　visible　light　irradiation.　The　highest　efficiency　was　observed　with　CZTS/La2Ti2O7　=　0.5.　The　enhancement　of　the　photocatalytic　activity　of　the　CZTS/La2Ti2O7　hetero-junction　photocatalysts　could　be　ascribed　to　their　improved　light　absorption　properties,　high　adsorption　capacities　and　reduced　recombination　of　the　photoexcited　electrons　and　holes　during　the　photocatalytic　reaction.