A　multi-wall　carbon　nanotube　(MWNT)/Nafion　composite　film-modified　electrode　was　developed　in　this　paper,　and　its　chemical　and　electrochemiluminescent　(ECL)　behavior　of　tris(2,2′-bipyridyl)ruthenium　(Ru(bpy)32+)　on　this　electrode　has　been　investigated　in　detail.　It　has　been　also　found　that　some　carbamates　were　able　to　enhance　the　ECL　intensity　of　Ru(bpy)32+　greatly　at　this　modified　electrode.　Based　on　which,　a　sensitive　and　simple　method　for　determination　of　pirimicarb,　methomyl,　aldicarb　and　carbofuran　were　developed,　and　the　proposed　method　has　been　applied　to　determine　the　carbamates　in　the　nature　water.　©　2005.