TiO2　loaded　on　activated　carbon　fibers　(ACF)　was　performed　by　using　epoxy　resin　as　the　precursor　of　the　link　between　them,　followed　by　calcination　at　466°C　in　N2　atmosphere,　and　the　changes　in　surface　characteristics　and　photocatalytic　activity　after　UV　irradiation　were　investigated　in　detail.　After　UV　irradiation,　the　pore　structure　and　surface　morphology　of　TiO2-loaded　ACF　(TiO2/ACF)　kept　unchanged.　The　UV-Vis　spectrum　shifted　toward　shorter　wavelengths　than　that　before　UV　irradiation.　XPS　results　showed　mat　the　hydroxyl　and　C-O　groups　increased,　resulting　in　an　increase　in　hydrophilicity　of　TiO2/ACF.　All　these　changes　caused　the　increased　photocatalytic　activity　for　methylene　blue,　and　the　activity　was　maintained　without　any　decrease　when　it　was　used　repeatedly.　Even　at　the　sixth　cycle,　its　amount　of　MB　removal　was　still　slightly　higher　than　suspended　P25.　©　World　Scientific　Publishing　Company.