In　this　article,　a　composite　paste　electrode　consisted　of　multiwall　carbon　nanotube　(MWCNT)　and　room　temperature　ionic　liquids　(RTILs)　was　developed　for　fabrication　of　electrochemiluminescence　(ECL)　sensor.　The　electrochemical　and　ECL　behaviors　of　this　sensor　were　investigated　in　detail.　This　ECL　sensor　exhibited　extraordinary　stability　during　long-term　potential　cycling.　It　was　found　that　the　light　emission　of　this　ECL　sensor　could　be　enhanced　by　methamphetamine　hydrochloride　(MAHCl)　dramatically.　Based　on　which,　a　new　method　based　on　this　ECL　sensor　has　been　developed　for　determination　of　MAHCl.　The　method　exhibited　a　good　reproducibility,　wide-range　linearity,　high　sensitivity　and　stability　with　a　detection　limit　(signal-to-noise　ratio　=　3)　of　8.0　×　10-9　mol/L,　and　the　relative　standard　deviation　was　3.1%　for　1　×　10-5　mol/L　MAHCl　(n　=　10).　©　2008　Elsevier　B.V.　All　rights　reserved.