A　carbon　nanotube　paste　(CNTP)　electrode　and　a　carbon　nanotube　paste/glucose　oxidase　(CNTP/GOx)　electrode　were　prepared,　and　the　electrochemiluminescent　(ECL)　behavior　of　luminol　in　the　presence　of　glucose　was　investigated　in　detail　at　each　of　these　electrodes.　Compared　to　the　classical　carbon　paste　(CP)　electrode,　the　CNTP　electrode　incorporating　glucose　oxidase　greatly　enhanced　the　response　of　the　ECL　sensor　to　glucose　due　to　the　electrocatalytic　activity　of　the　carbon　nanotubes,　the　specificity　of　the　enzymatic　reaction,　and　the　sensitivity　of　the　luminol　ECL　reaction.　Under　optimal　conditions,　the　electrode　was　found　to　respond　linearly　to　glucose　in　the　concentration　range　1.0∈×∈10-6~2.　0∈×∈10-3　mol/L,　and　the　detection　limit　(defined　as　the　concentration　that　can　be　detected　at　a　signal-to-noise　ratio　of　3)　was　found　to　be　a　glucose　concentration　of　5.0∈×∈10-7　mol/L.　The　method　used　to　prepare　the　CNTP/GOx　electrode　was　very　convenient,　and　the　electrode　surface　could　be　renewed　in　the　case　of　fouling　by　simply　polishing　or　cutting　it　to　expose　a　new　and　fully　active　surface.　The　relative　standard　deviations　(RSD)　were　found　to　be　6.8%　and　8.9%　for　the　CNTP　electrode　and　the　CNTP/GOx　electrode　(n∈=∈6).　The　electrode　retained　95%　of　its　initial　response　after　two　weeks.　©　Springer-Verlag　2007.