The　chlorine　poisoning　of　catalyst　caused　by　catalytic　oxidation　of　CVOCs　after　long-term　operation　is　still　the　bottleneck　of　its　large-scale　industrial　application.　In　this　work,　Ru-xSn/TiO2　catalysts　with　oxidation　and　acid　function　were　prepared　by　the　typical　impregnation　method,　and　the　catalytic　oxidation　of　chlorobenzene　(CB)　was　also　investigated.　Meanwhile,　the　doping　of　Sn　could　make　the　catalyst　maintain　excellent　activity　on　the　basis　of　reducing　the　content　of　noble　metals.　The　optimal　catalytic　oxidation　activity　of　CB　was　obtained　by　doping　10　%　Sn　on　0.4Ru/TiO2,　and　the　T10　and　T90　values　were　140　degrees　C　and　195　degrees　C,　respectively,　which　were　similar　to　that　of　2.0Ru/TiO2.　SnO2　improved　the　concentration　of　Ru4+　on　the　surface　of　the　catalyst　and　formed　a　solid　solution　with　TiO2　to　promote　the　crystal　phase　structure　of　anatase-TiO2　to　rutile,　resulting　in　an　increase　of　surface　defect　sites.　The　acidity　of　Ru-Sn/TiO2　catalyst　was　higher　than　that　of　Ru/TiO2　catalyst　and　the　Lewis　acid　would　increase　with　the　formation　of　Sn-O-Ti,　while　RuO2　was　mainly　the　Bro　center　dot　nsted　acid　center,　so　it　had　a　suitable　B/L　ratio.　CO2　was　almost　the　only　carbon-containing　product,　the　oxidation　process　products　were　mainly　benzoquinone,　maleate,　acetate,　aldehydes　and　other　intermediates.　Most　chlorine　species　were　removed　as　HCl　and　Cl2　under　the　promotion　of　Deacon　reaction.