Li-rich　cathode　material　0.5Li2MnO3·0.5LiCoO2　is　prepared　by　molten　salt　method,　using　raw　materials　with　low　melting　point　and　mixing　at　low　temperature.　The　influences　of　various　sintered　temperatures　and　different　lithium　contents　on　crystal　structure,　morphology　and　electrochemical　properties　of　Li-rich　cathode　material　are　performed.　Powders　with　homogenous　sizes　distribution　and　well　layer　structure　are　obtained　when　sample　sinters　at　850°C　for　short　time　after　preheated　at　200°C　and　uses　stoichiometric　amounts　of　Li　source.　In　order　to　improve　cycling　performance,　Li-rich　material　0.5Li2MnO3·0.5LiCoO2　is　modified　by　fluorinion-doping　using　molten　salt　method.　The　results　show　that　cycling　and　rate　performance　are　improved.　At　the　same　time,　the　phenomenon　of　capacity　increasing　with　cycles　is　relieved　after　fluorinion-doping,　and　the　time　of　activation　is　shortened　at　high　current　density.