The　commercialization　prospect　of　Li-rich　Mn-based　(LRM)　cathode　materials　lies　in　their　high　energy　density　(＞900　Wh　kg-1),　but　the　practical　application　in　many　scenarios　is　hindered　by　their　low　intrinsic　ionic　conductivity.　Herein,　we　increase　the　ionic　conductivity　and　cycling　performance　of　LRM　cathode　materials　by　utilizing　the　different　distribution　habit　of　La3+　and　Zr4+.　La　atoms　tend　to　accumulate　on　the　grain　surface,　while　Zr4+　is　likely　to　be　doped　into　the　bulk　of　LRM　cathode,　which　is　confirmed　by　the　theoretical　calculation　and　experimental　results.　The　surface　is　modified　by　the　island-shaped　and　conductive　LaMnO3+delta　(LMO)　and　La2Zr2O7　(LZO)　compounds,　constructing　a　triple-phase　interface　(TPI)　for　the　rapid　lithium-ion　diffusion.　Meanwhile,　the　bulk　LRM　lattices　are　doped　by　Zr4+　to　stabilize　the　layered　framwork.　The　modified　LRM　cathode　calcined　at　650　C　exhbits　a　high　specific　capacity　of　192.6　mAh　g-1　after　200　cycles　at　2C　rate　with　superior　Li+　diffusion　coefficients　and　enhanced　rate　capability.　This　study　sheds　light　on　how　to　rationally　improving　the　ionic　conductivity　of　LRM　cathode　for　its　practical　application.