Tight　ultrafiltration　(TUF)　membranes　have　been　proposed　as　an　effective　candidate　for　the　treatment　of　textile　wastewater　with　high　salinity.　In　this　study,　a　novel　polysulfate　(PSE)-based　TUF　membrane　was　prepared　by　coupling　the　non-solvent　induced　phase　separation　(NIPS)　process　with　the　physical　aging　method.　The　polyvinylpyrrolidone　(PVP)　was　adopted　to　tailor　the　micro-/nanostructure　of　the　fabricated　membranes.　Accordingly,　the　molecular　weight　cut-off　(MWCO)　of　the　membrane　can　be　tuned　from　293.8　to　3.7　kDa.　Endowed　with　the　high　porosity　and　small　pore　size,　the　optimized　PSE/PVP　blend　membrane　(a　MWCO　of　3.9　kDa)　was　applied　for　removal　of　dyes　from　dye/salt　aqueous　solution,　which　offered　top-tier　overall　performance,　e.g.,　a　pure　water　flux　of　70.7　L*m(-2)*h(-1),　CR/NaCl　selectivity　of　494.3,　CR/Na2SO4　selectivity　of　42.6,　long-term　running　stability,　and　excellent　antifouling　performance.　Therefore,　our　study　establishes　a　simple　avenue　to　fabricate　a　high-performance　TUF　membrane　for　practical　textile　wastewater　treatment.