A　new　composite　hollow　fiber　ultrafiltration　(UF)　membrane　was　prepared　with　the　interfacial　polymerization　method.　A　dense　layer　of　polyvinyl　alcohol　(PVA)　was　coated　on　the　surface　and　embedded　into　the　pores　of　the　support　polysulfone　(PSf)　membrane　through　a　dead-end　filtration　process　and　cross-linked　reaction　with　diisocyanate　(TDI)　at　room　temperature.　The　surface　morphology　and　functional　groups　of　the　composite　membrane　were　characterized　by　atomic　force　microscopy　(AFM),　scanning　electron　microscopy　(SEM),　and　Fourier　transformation　infrared　spectrometer　(FTIR).　Anti-fouling　experiments　were　conducted　to　study　the　hydrophilicity　and　anti-fouling　properties　of　the　support　and　composite　membranes.　The　performances　of　the　composite　membrane　were　significantly　influenced　by　preparation　conditions.　The　composite　membrane　that　performed　most　efficiently　was　prepared　at　an　optimal　condition:　30　min　of　dead-end　filtration,　0.25　wt%　of　PVA,　0.50　vol%　of　TDI,　and　60　sec　of　interfacial　reaction.　Laboratory　scale　tests　demonstrated　that　the　new　composite　PVA/PSf　membrane　has　a　higher　anti-fouling　capability　and　higher　flux　for　oily　wastewater　treatment.　The　hydrophilic　groups　(?OH)　enriched　in　the　PVA　molecules　on　the　composite　surface　could　play　an　important　role　for　the　improvement　of　the　anti-fouling　property　and　the　enhancement　of　flux　recovery　rate　of　the　composite　membrane.　POLYM.　ENG.　SCI.,　2012.　(c)　2011　Society　of　Plastics　Engineers