A　new　water-soluble　iridium(III)　diimine　complex　with　appended　glucose　was　synthesized　and　characterized.　The　photophysical　properties　and　electrogenerated　chemiluminescence　(ECL)　behavior　of　the　complex　were　studied.　The　new　iridium(III)　complex　displayed　good　emission　under　the　UV-light　excitation　in　aqueous　solution　and　gave　out　the　strongest　ECL　signals　on　the　glass　carbon　electrode　in　the　presence　of　high　concentration　of　tri-n-propylamine　(TPA,　20　mM)　compared　to　that　on　Au　and　Pt　electrodes　in　phosphate　buffer　(pH　=　7.5).　But　at　low　concentration　of　TPA　(1.0　mM),　the　ECL　intensity　of　the　complex　was　close　on　the　GC,　Au　and　Pt　electrodes.　The　ECL　of　the　system　had　a　good　linearity　with　the　TPA　concentration　from　0.1　mu　M　to　1　mM　with　a　limit　of　determination　of　50　nM　(S/N　=　3).