In　this　work,　we　studied　the　supercritical　water　oxidation　(SCWO)　of　the　textile　sludge,　the　hydrothermal　conversion　of　typical　textile　compounds　and　the　corrosion　properties　of　stainless　steel　316.　Moreover,　the　influence　mechanisms　of　NaOH　during　these　related　processes　were　explored.　The　results　show　that　decomposition　efficiency　for　organic　matter　in　liquid　phase　of　the　textile　sludge　was　improved　with　the　increment　of　reaction　temperature　or　oxidation　coefficient.　However,　the　organic　substance　in　solid　phase　can　be　oxidized　completely　in　supercritical　water.　Serious　coking　occurred　during　the　high　pressure　water　at　250-450　degrees　C　for　the　Reactive　Orange　7,　while　at　300　and　350　degrees　C　for　the　polyvinyl　alcohol.　The　addition　of　NaOH　not　only　accelerated　the　destruction　of　organic　contaminants　in　the　SCWO　reactor,　but　effectively　inhibited　the　dehydration　conversion　of　textile　compounds　during　the　preheating　process,　which　was　favorable　for　the　treatment　system　of　textile　sludge.　The　corrosion　experiment　results　indicate　that　the　stainless　steel　316　could　be　competent　for　the　body　materials　of　the　reactor　and　the　heat　exchangers.　Furthermore,　there　was　prominent　enhancement　of　sodium　hydroxide　for　the　corrosion　resistance　of　316　in　subcritical　water.　On　the　contrary　the　effect　was　almost　none　during　SCWO.