Using　Ti(OBun)(4)　as　the　inorganic　precursor,　Pluronic　F127　as　the　templating　agent,　and　thiourea　as　the　additive,　mesoporous　anatase　TiO2　thin　films　were　prepared　through　sol-gel　method　coupled　with　evaporation-induced　self-assembly　(EISA)　process.　Scanning　electron　microscope,　X-ray　photoelectron　spectra,　N-2　adsorption-desorption,　X-ray　diffraction,　and　UV-Vis　spectra　were　used　to　characterize　the　as-synthesized　mesoporous　TiO2　materials.　It　is　found　that,　apart　from　doping　N,　S　elements　into　the　TiO2　lattice,　the　mesostructure　of　the　TiO2　thin　films　is　changed　by　adding　thiourea　into　the　reactive　solution.　When　the　mole　ratio　of　thiourea　to　Ti(OBun)(4)　is　2.5%,　the　pore　size　of　the　synthesized　mesostructured　TiO2　reaches　12.4nm,　and　the　mesoporous　TiO2　sample　shows　the　best　UV　photocatalytic　activity　in　the　degradation　of　the　methyl　organge　(MO).　When　the　mole　ratio　of　thiourea　to　Ti(OBun)(4)　is　5%,　the　absorption　edge　of　the　as-synthesized　sample　can　be　extended　from　380nm　to　520nm,　and　the　sample　exhibits　the　best　visible　photo　catalytic　activity　in　decomposing　the　Rhodamine　B　(RhB).