The　volatile　organic　compounds　(VOCs)　from　cooking　oil　fumes　are　very　complex　and　do　harm　to　humans　and　the　environment.　Herein,　we　develop　the　high-efficiency　and　energy-saving　synergistic　photothermocatalytic　oxidation　approach　to　eliminate　the　mixture　of　heptane　and　hexanal,　the　representative　VOCs　with　high　concentrations　in　cooking　oil　fumes.　The　Pt/CeO2/TiO2　catalyst　with　nanosized　Pt　particles　was　prepared　by　the　simple　hydrothermal　and　impregnation　methods,　and　the　physicochemical　properties　of　the　catalyst　were　measured　using　numerous　techniques.　The　Pt/CeO2/TiO2　catalyst　eliminated　the　VOC　mixture　at　low　light　intensity　(100　mW　cm(-2))　and　low　temperature　(200　degrees　C).　In　addition,　it　showed　25　h　of　catalytic　stability　and　water　resistance　(water　concentration　up　to　20　vol　%)　at　140　or　190　degrees　C.　It　is　concluded　that　O-2　picked　up　the　electrons　from　Pt　to　generate　the　O-center　dot(2)-　species,　which　were　transformed　to　the　O-2(2-)　and　O-　species　after　the　rise　in　temperature.　In　the　presence　of　water,　the　(OH)-O-center　dot　species　induced　by　light　irradiation　on　the　catalyst　surface　and　the　(OOH)-O-center　dot　species　formed　via　the　thermal　reaction　were　both　supplementary　oxygen　species　for　VOC　oxidation.　The　synergistic　interaction　of　photo-　and　thermocatalysis　was　generated　by　the　reactive　oxygen　species.