Pt/Mn-TiO2　photothermal　catalysts　with　abundant　oxygen　vacancies　are　prepared　by　loading　Pt　onto　a　composite　of　MnOx　and　TiO2　using　MIL-125　as　precursor　(abbreviated　as　Mn-TiO2)　and　subsequent　hydrogen　reduction　treatment.　Under　light　irradiation　with　intensity　of　625　mW/cm2,　the　optimal　0.65Pt/Mn-TiO2　catalyst　can　achieve　toluene　conversion　of　90.4　%　and　CO2　yield　of　85.6　%,　respectively,　and　maintain　stable　activity　for　at　least　30　h　in　the　presence　of　coke　and　water.　The　introduction　of　Pt　nanoparticles　improves　the　utilization　of　solar　spectrum　and　facilitates　the　generation　of　more　oxygen　vacancies.　The　comparative　experiments　of　photothermal　catalysis　and　thermal　catalysis　further　verify　that　light　not　only　acts　as　a　heat　source　but　also　enhances　catalytic　reaction　through　photocatalysis　and　photoactivation　of　lattice　oxygen.　In　the　follow-up　work,　catalytic　oxidation　under　natural　sunlight　is　performed　on　0.65Pt/Mn-TiO2　to　reach　75.0　%　of　toluene　conversion,　displaying　a　good　practical　application　potential.