Plasmonic　metal/semiconductor　composites　have　attracted　great　attention　for　efficient　solar　energy　harvesting　in　photovoltaic　and　photocatalytic　applications　owing　to　their　extremely　high　visible-light　absorption　and　tuned　effective　band　gap.　In　this　work,　Ag-loaded　TiO2　nanocolumn　(Ag-TNC)　arrays　were　fabricated　based　on　anodic　aluminum　oxide　(AAO)　template　by　combining　atomic　layer　deposition　(ALD)　and　vacuum　evaporation.　The　effects　of　the　Ag　loading　position　and　deposition　thickness,　and　the　morphology,　structure　and　composition　of　Ag-deposited　TNC　arrays　on　its　optical　and　photocatalytic　properties　were　studied.　The　Ag-filled　TiO2　(AFT)　nanocolumn　arrays　exhibited　higher　removal　efficiency　of　methylene　blue　(MB)　compared　with　Ag-coated　TiO2　(ACT)　nanocolumn　arrays　and　pure　TiO2　nanocolumns　arrays.　Both　experimental　and　theoretical　simulation　results　demonstrated　that　the　enhanced　photocatalytic　performance　of　AFT　nanocolumn　arrays　was　attributed　to　the　surface　plasmon　resonance　(SPR)　of　Ag　and　the　absorption　of　light　by　TiO2.　These　results　represent　a　promising　step　forward　to　the　development　of　high-performance　photocatalysts　for　energy　conversion　and　storage.