Detecting　trace　endocrine　disruptors　in　water　is　crucial　for　evaluating　the　water　quality.　In　this　work,　a　innovative　modified　polyacrylonitrile@cyanuric　chloride-triphenylphosphine　nanofiber　membrane　(PAN@CC-TPS)　was　prepared　by　in　situ　growing　triazine　porous　organic　polymers　on　the　polyacrylonitrile　(PAN)　nanofibers,　and　used　in　the　dispersive　solid　phase　extraction　(DSPE)　to　enrich　trace　nitrobenzene　phenols　(NPs)　in　water.　The　resluted　PAN@CC-TPS　nanofiber　membrane　consisted　of　numerous　PAN　nanofibers　cover　with　CC-TPS　solid　spheres　(similar　to　2.50　mu　m)　and　owned　abundant　functional　groups,　excellent　enrichment　performance　and　good　stability.　In　addition,　the　method　based　on　PAN@CC-TPS　displayed　outstanding　capacity　in　detecting　the　trace　nitrobenzene　phenols,　with　0.50-1.00　mu　g/L　of　the　quantification,　0.10-0.80　mu　g/L　of　the　detection　limit,　85.35-113.55　%　of　the　recovery　efficiency,　and　98.08-103.02　of　the　enrichment　factor,　which　was　comparable　to　most　materials.　Meanwhile,　when　PAN@CC-TPS　was　adopted　in　the　real　water　samples　(sea　water　and　river　water),　the　high　enrichment　factors　and　recovery　percentages　strongly　confirmed　the　feasibility　of　PAN@CC-TPS　for　enriching　and　detecting　the　trace　NPs.　Besides,　the　related　mechanism　of　extracting　NPs　on　PAN@CC-TPS　mainly　involved　the　synergistic　effect　of　hydrogen　bonding,　pi-pi　stacking　and　hydrophobic　effect.