A　new　method　for　the　determination　of　organophosphorus　pesticides　using　CE-ICP-MS　with　collective　sample-introduction　technique　has　been　developed　in　this　study.　The　method　has　been　successfully　used　to　separate　and　determine　dimethoate,　trichlorfon　and　glyphosate　with　an　RSD　of　＜5%　for　migration　times　(n　=　6)　and　＜4%　for　peak　areas　(n　=　6).　The　experimental　results　showed　that　the　collective　sample-introduction　considerably　reduced　the　makeup　volume　and　the　dilution　of　analyte,　and　eventually　resulted　in　a　much　lower　detection　limit　and　a　much　better　electrophoretic　resolution.　The　peak　widths　and　the　detection　limits　of　dimethoate,　trichlorfon　and　glyphosate　obtained　with　this　method　are　15-17　s　and　0.05-0.07　μg/mL　(as　compound),　respectively.　Using　this　method,　we　have　successfully　separated　and　determined　dimethoate,　trichlorfon　and　glyphosate　in　vegetable　sample　with　a　recovery　of　90-96%.　©　2009　Wiley-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim.