Landfill　leachates　(LFLs)　pose　a　severe　environmental　threat　given　their　high　strength　and　the　slow　degradation　nature　of　their　organic　and　inorganic　pollutants　constituents.　Hence,　they　are　challenging　to　treat　by　conventional　wastewater　treatment　methods.　Although　membrane　distillation　(MD)　is　promising　for　wastewater　treatment,　membrane　wetting　and　scaling　that　lead　to　membrane　fouling　are　the　bottlenecks　in　applying　this　technology　to　LFLs.　In　this　work,　a　commercial　Teflon　emulsion　was　used　to　modify　the　PVDF　membrane　via　a　simple　dip-coating　method,　followed　by　depositing　the　PTFE　particles　onto　the　membrane　surface　via　thermal　curing　crosslinking　reaction.　Hence,　a　Teflon/PVDF　composite　membrane　was　successfully　prepared　with　resistance　to　sodium　dodecyl　sulfate　wetting,　CaSO4　scaling,　and　humic　acid　fouling.　Effects　of　the　Teflon　emulsion　concentration　and　dipping　time　on　the　composite　membrane＇s　chemical　composition,　surface　characteristics,　porosity,　mechanical　properties,　liquid　entry　pressure　(LEPW),　and　direct　contact　membrane　distillation　(DCMD)　performance　were　systematically　investigated.　The　results　showed　that　Teflon　emulsion　modification　could　improve　the　membrane　surface＇s　hydrophobicity,　reduce　pore　size,　and　increase　mechanical　strength.　The　Teflon/PVDF　composite　membrane　with　100%　Teflon　emulsion　and　10　min　dipping　time　exhibited　the　highest　hydrophobicity　and　144.3o　water　contact　angle.　The　M100-10　membrane　also　exhibited　stable　performance　for　treating　nanofiltration　(NF)　brine　collected　from　the　LFL.　When　concentrating　the　NF　brine,　the　M100-10　membrane　achieved　only　a　7.1%　flux　decay　rate.　Hence,　the　Teflon/PVDF　composite　membrane　demonstrated　excellent　wetting,　scaling,　and　fouling　resistance.　This　dip-coating　method　is　simple,　low　cost,　easy　to　scale　up,　and　has　potential　in　the　large-scale　production　of　hydrophobic　porous　membranes.