A　quantitative　method　consisting　of　solid-phase　extraction　(SPE)　followed　by　liquid　chromatography/electrospray　ionization　ion　trap　mass　spectrometry　(LC/ESI-ITMS)　analysis　was　developed　for　the　identification　and　quantitation　of　ten　pyrethroid　pesticides　commonly　used　in　vegetables.　The　best　HPLC　separation　was　achieved　using　a　gradient　program　of　methanol/water　mixture.　For　the　vegetable　samples,　an　SPE　procedure　to　clean　up　the　matrices　was　carried　out　prior　to　LC/MS　analysis.　Under　the　optimum　conditions,　the　limits　of　quantification　of　the　pyrethroid　pesticides　(tetramethrin,　allethrin,　fenpropathrin,　lambda-cyhalothrin,　cypermethrin,　deltamethrin,　fenvalerate,　bioresmethrin,　permethrin　and　bifenthrin)　ranged　from　0.03　to　0.1　mg　kg(-1)　with　relative　standard　deviations　＜20%,　and　the　mean　recoveries　ranged　from　69.5　to　102.5%.　The　proposed　method　has　been　successfully　applied　to　the　determination　of　pyrethroids　in　six　vegetables　with　satisfactory　results.　Copyright　(C)　2007　John　Wiley　&　Sons,　Ltd.