Surface-enhanced　Raman　spectroscopy　(SERS)　has　advanced　over　the　last　four　decades　and　has　become　an　attractive　tool　for　highly　sensitive　analysis　in　fields　such　as　medicine　and　environmental　monitoring.　Recently,　there　has　been　an　urgent　demand　for　reusable　and　long-lived　SERS　substrates　as　a　means　of　reducing　the　costs　associated　with　this　technique　To　this　end,　we　fabricated　a　SERS　substrate　comprising　a　silicon　nanowire　array　coated　with　silver　nanoparticles,　using　metal-assisted　chemical　etching　followed　by　photonic　reduction.　The　morphology　and　growth　mechanism　of　the　SERS　substrate　were　carefully　examined　and　the　performance　of　the　fabricated　SERS　substrate　was　tested　using　rhodamine　6G　and　dopamine　hydrochloride.　The　data　show　that　this　new　substrate　provides　an　enhancement　factor　of　nearly　1　x　10(8).　This　work　demonstrates　that　a　silicon　nanowire　array　coated　with　silver　nanoparticles　is　sensitive　and　sufficiently　robust　to　allow　repeated　reuse.　These　results　suggest　that　this　newly　developed　technique　could　allow　SERS　to　be　used　in　many　commercial　applications.