Enhancing　the　membrane　water　permeability　without　undermining　selectivity　has　strong　potential　to　reduce　the　cost　of　loose　nanofiltration　(LNF)　which　attracts　growing　interest　in　water　and　wastewater　treatments.　Herein,　we　report　a　novel　polyelectrolyte　multilayer　LNF　membrane　with　intercalated　surfactant　self-assemblies.　The　LNF　membranes　with　integrated　surfactant　self-assemblies　exhibit　outstanding　permeability　to　water　and　selectivity　to　organic　macromolecules　such　as　humic　acid　and　methyl　blue.　Specifically,　the　integration　of　surfactant　self-assemblies,　SSA,　enhances　the　water　permeability　by　more　than　5-fold　compared　to　the　reference　LNF　membrane　and,　at　the　same　time,　increases　humic　acid　rejection　from　93%　to　98%.　The　SSA　integrated　LNF　membranes　also　demonstrate　superior　performance　in　terms　of　permselectivity　compared　to　other　membranes　in　the　literature　for　similar　separation　(humic　acid　removal).