TiO2-based　nanotubes　(TiO2NT)　were　synthesized　by　hydrothermal　treatment　under　the　alkaline　conditions　using　P25　as　the　raw　material.　Then　copper　phthalocyanine　(CuPc)　was　chosen　as　a　sensitizer　to　prepare　CuPc　modified　TiO2NT　composite　material　(CuPciTiO(2)NT)　by　the　immersion　method.　The　structure　and　properties　of　the　samples　were　characterized,　and　the　photocatalytic　activity　of　pure　TiO2NT　and　CuPc/TiO2NT　was　also　evaluated　by　degradating　rhodamine　B　under　the　visible　light.　The　results　showed　that　the　TiO2NT　had　large　surface　area　(362.6　m(2)/g)　and　high　pore　volume　(2.039　cm(3)/g).　Even　after　modified　by　CuPc,　the　composite　material　still　kept　the　high　surface　area　(244.2　m(2)/g)　and　pore　volume　(1.024　cm(3)/g)　for　0.2%CuPc/TiO2NT.　The　recombination　of　photo-injected　electrons　decreases　based　on　the　effective　charge　separation　on　the　interface　of　TiO2NT　and　CuPc,　improving　the　transfer　efficiency　of　the　photo-excited　charges　under　visible　light.　Furthermore,　the　catalyst　exhibited　obvious　visible　photocatalytic　activity　after　sensitized　by　CuPc.　As　the　mole　percentage　of　CuPc　was　0.2%　in　the　composite,　the　degradation　rate　of　rhodamine　B　over　0.2%CuPc/TiO2NT　could　reach　59%,　increasing　by　3.3　times　compared　with　pure　TiO2NT　after　reaction　for　180　min.