Nanofiltration　(NF)　membranes　offer　advantages　to　address　enormous　demands　for　textile　water　treatment.　To　meet　omnipresent　challenges　of　dye/salt　selectively　and　antifouling　performance,　an　efficient　dye　desalting　and　antifouling　NF　membrane　was　developed　by　virtue　of　zwitterionic　functionalized　monomer　(zwitterionic　N,N-Bis　(3-aminopropyl)methylamine,　ZDNMA).　The　structures　of　zwitterionic　membranes　can　be　tailored　to　suit　the　separation　performance　and　antifouling　property.　The　prepared　zwitterionic　NF　membrane　shows　superior　removal　performance　of　methyl　blue　and　penetration　capacity　of　NaCl　due　to　zwitterion　desirable　features　of　accelerating　NaCl　transportation.　Thus,　the　membrane　selectivity　factor　for　NaCl/methyl　blue　can　be　as　high　as　857.0,　accompanied　by　pure　water　flux　of　10.67　Lm(-2)h(-1)bar(-1).　When　dealing　with　0.3　g　L-1　MYB　and　4　g　L　NaCl　mixture　solution,　a　high　NaCl　removal　was　achieved　in　75.8%　with　about　8.1%　dye　loss　after　dye　purification　process.　Furthermore,　the　membrane　revealed　antifouling　performance　with　a　94.9%　flux　recovery　ratio.　The　zwitterionic　NF　membrane　highlights　more　exceptional　dye　desalination　performance,　which　renders　a　vast　potential　for　practical　textile　effluent.