Mixture　of　triphosphazene-sulfur　composite　(TPS)　and　mesoporous　carbon　were　prepared　by　heat　treatment　with　the　aim　to　improve　TPS＇　electrochemical　properties.　Results　of　scanning　electron　microscope　test　show　that　the　morphology　of　TPS＇　surface　was　different　from　that　of　elemental　sulfur;　data　of　contact　angle　measurement　was　that　the　contact　angle　of　water　droplet　with　TPS＇　surface　was　35°,　while　that　of　elemental　sulfur＇s　surface　was　115°;　results　of　XRD　and　IR　test　prove　that　structural　characteristic　of　TPS　was　the　same　as　sulfur,　with　its　surface　decorated　by　phosphazene　groups.　When　TPS　mixed　with　mesoporous　carbon,　it　showed　improved　electrochemical　properties.　At　the　constant　current　of　10mA/g,　its　initial　discharge　capacity　was　767　mAh/g,　the　second　cycle　of　capacity　retention　rate　was　84.8%,　its　discharge　capacity　remained　at　303.8　mAh/g　after　30　cycles.