Mesoporous　TiO2　frameworks　were　synthesized　by　the　sol-gel　combined　with　evaporation-induced　self-assembly　(EISA)　methods　using　F127　as　the　templating　agent.　Based　on　the　obtained　mesoporous　TiO2,　Ag/AgCl/mosoporous　TiO2　composites　were　synthesized　by　the　method　of　depositing　AgCl　and　then　reducing　partial　Ag+　ions　to　Ag-0　under　mercury　lamp　irradiation.　SEM.　XRD　were　used　to　characterize　the　composites,　and　the　efficiency　of　photodegradating　methyl　orange　(MO)　is　also　investigated.　The　results　reveal　the　prepared　TiO2　frameworks　are　composed　of　well　crystallized　anatase,　and　AgCl　can　be　identified　as　chlorargyrite.　The　incorporation　of　Ag　and　AgCl　has　not　destroyed　the　mesoporous　TiO2　frameworks.　Compared　with　pure　mesoporous　TiO2,　the　photodegradation　efficiency　of　the　composites　is　almost　doubled.　The　increase　of　photodegradation　efficiency　is　attributed　to　surface　plasmon　resonance　absorption　of　Ag.