The　CNTs/PI　composites　were　prepared　by　in-situ　polymerization　from　DCP,　BTDA　and　CNTs　as　raw　materials　and　their　molecular　structures,　crystallinity,　microstructure　and　electrochemical　properties　were　studied.　The　results　showed　that　CNTs/PI　composites　were　partially　crystalline　materials,　and　CNTs　were　coated　by　PI　uniformly.　CNTs/PI　composites　had　better　electrochemical　redox　behaviors　and　the　oxidation　potentials　of　composites　gradually　moved　to　high　potential　and　the　reduction　potential　gradually　moved　to　low　potential　with　the　increasing　content　of　CNTs,　which　was　ascribed　to　the　fact　that　the　ability　to　obtain　the　electrons　of　composites　decreased　and　the　ability　to　loss　the　electrons　enhanced　after　adding　CNTs.　©　2015,　Chongqing　Functional　Materials　Periodical　Press　Co.　Ltd.　All　right　reserved.