In　order　to　investigate　the　antifouling　performance　of　low-pressure　carbon　nanotube　membranes　based　on　polydopamine　(PDA)　biomimetic　modification,　layered　multi-walled　carbon　nanotubes　PDA　membrane　(layered　MWCNTs-PDA)　and　PDA　blended　MWCNTs　membrane　(blended　PDA/MWCNTs)　were　prepared.　The　MWCNTs　membranes＇　antifouling　performance　and　recoverability　was　significantly　improved　in　filtrating　BSA,　HA　and　SA　after　PDA　biomimetic　modification,　and　the　total　fouling　and　irreversible　fouling　were　all　decreased.　Compared　with　the　blended　PDA/MWCNTs　membrane,　the　layered　MWCNTs-PDA　membrane　had　higher　antifouling　property　as　it　further　improved　the　electronegativity　and　hydrophilicity　of　membrane　surface.　In　addition,　denser　surface　pore　size　of　the　layered　MWCNTs-PDA　membrane　can　effectively　reduce　the　fouling　by　trapping　foulants　on　its　surface.　The　combination　of　PDA　biomimetic　modification　with　MWCNTs　membrane　had　a　superior　antifouling　performance　and　rejection　performance　in　processing　NOM　and　artificial　wastewater,　and　the　majority　of　humic-like　foulants　could　be　excluded　by　the　layered　MWCNTs-PDA　membrane.　PDA　biomimetic　modification　alleviated　the　adhesion　of　FITC-BSA　on　the　MWCNTs　membrane.　The　layered　MWCNTs-PDA　membrane　especially　alleviated　the　attachment　of　bacteria　and　processed　excellent　antimicrobial　ability　for　bacteria.