A　glassy　carbon　electrode　(　GCE)　modified　with　nickel(II)　tetrasulfophthalocyanine　(NiTSPc)　and　Nafion(R)　was　used　for　the　investigation　of　the　catalytic　oxidation　of　luminol.　The　modified　electrode　was　found　to　much　more　effectively　improve　the　emission　of　electrochemiluminescence(ECL)　of　luminol　in　a　solution　containing　hydrogen　peroxide.　The　enhanced　ECL　signal　corresponded　to　the　catalytic　oxidation　of　both　luminol　and　H2O2　by　NiTSPc.　Attached　Ni(II)　on　GCE　was　oxidised　to　Ni(III)　and　then　used　as　the　catalyst　for　the　chemiluminescence　of　luminol.　The　enhanced　stability　of　the　ECL　signal　with　Nafion(R)　would　mainly　result　from　the　prevention　of　the　dissolution　of　NiTSPc　and　the　adsorption　of　the　oxidation　product　of　luminol　on　the　electrode　surface.　The　proposed　method　enables　a　detection　limit　for　luminal　of　6.0　x　10(-8)　mol　L-1　to　be　achieved　in　the　presence　of　H2O2　in　the　neutral　solution.　The　enhanced　ECL　intensity　had　a　linear　relationship　with　the　concentration　of　luminol　in　the　range　of　1.0　x　10(-7)-8.0　x　10(-6)　mol　L-1.