Na3　V2　(PO4　)3　cathode　material　has　the　NASICON　structure　with　high　ionic　conductivity　and　stability,　showing　good　cycle　performance;　however,　its　low　electronic　conductivity　greatly　limits　the　discharge　capacity　and　energy　density　of　batteries.　The　doping　and　coating　modification　strategies　of　Na3　V2　(PO4　)3　cathode　materials　are　summarized,　the　effects　of　single　ion　doping,　co-doping　and　coating　on　the　interface　properties,　structural　stability　and　electrochemical　properties　of　Na3　V2　(PO4　)3　cathode　materials　are　analyze,　and　the　structure-activity　relationship　between　structural/interfacial　transformation　and　electrochemical　properties　after　different　ion　doping　and　coating　is　elaborated.　The　comprehensive　analysis　shows　that　both　doped　and　coated　vanadium-based　cathode　materials　exhibit　excellent　structure　stability　and　electrochemical　performance,　providing　a　reference　for　the　research　of　the　new　generation　of　high　energy　density　sodium　ion　battery.　©　2024　Editorial　Office　of　Acta　Petrolei　Sinica.　All　rights　reserved.