A　simple,　rapid　and　effective　method,　the　dispersive　liquid-liquid　microextraction　coupled　with　high　performance　liquid　chromatography-fluorescence　detection　(DLLME-HPLCFLD),　has　been　developed　for　the　extraction　and　determination　of　polynuclear　aromatic　hydrocarbons　(PAHs)　in　environmental　water　samples.　The　factors　relevant　to　the　microextraction　efficiency,　such　as　type　and　volume　of　dispersion　agent　and　extraction　solvents　and　the　extraction　time　were　investigated　and　optimized.　Under　the　optimized　extraction　conditions,　the　reliability　of　the　proposed　method　was　evaluated.　The　linear　response　of　this　method　was　in　the　range　of　0.　01　-10　μg/L　(r　≥　0.　991　3),　the　relative　standard　deviations　(RSDs)　of　peak　area　for　0.　05　μg/L　PAHs　were　in　the　range　of　2.　3%　-　4.　7%　(n　=　6).　At　room　temperature;　the　method　exhibited　excellent　enrichment　factors　and　good　recoveries,　674　-　1　032　and　67.　4%　-　103.　2%　respectively.　The　detection　limits　(S/N　=　3)　were　in　the　range　of　0.　000　3-0.　002　μg/L.　The　developed　method　was　applied　to　the　determination　of　15　PAHs　in　the　water　from　Aojiang　river,　the　average　recoveries　were　79.　5%　-　92.　3%　with　RSD　of　4.　3%　-　6.　7%　(n　=5).　The　developed　method　is　suitable　for　the　analysis　of　trace　PAHs　in　environmental　water　samples.