A　multi-wall　carbon　nanotube　(MWNT)/Nafion　composite　film-modified　electrode　was　developed　in　this　paper,　and　its　chemical　and　electro-chemiluminescent　(ECL)　behavior　of　tris(2,2＇-bipyridyl)ruthenium　(Ru(bpy)(3)(2+))　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)(3)(2+)　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.　(c)　2005　Published　by　Elsevier　B.V.