The　construction　of　a　protective　layer　for　stabilizing　anion　redox　reaction　is　the　key　to　obtaining　long　cycling　stability　for　Li-rich　Mn-based　cathode　materials.　However,　the　protection　of　the　exposed　surface/interface　of　the　primary　particles　inside　the　secondary　particles　is　usually　ignored　and　difficult,　let　alone　the　investigation　of　the　impact　of　the　surface　engineering　of　the　internal　primary　particles　on　the　cycling　stability.　In　this　work,　an　efficient　method　to　regulate　cycling　stability　is　proposed　by　simply　adjusting　the　distribution　state　of　the　boron　nickel　complexes　coating　layer.　Theoretical　calculation　and　experimental　results　display　that　the　full-surface　boron　nickel　complexes　coating　layer　can　not　only　passivate　the　activity　of　interface　oxygen　and　improve　its　stability　but　also　play　the　role　of　sharing　voltage　and　protective　layer　to　gradually　activate　the　oxygen　redox　reaction　during　cycling.　As　a　result,　the　elaborately　designed　cobalt-free　Li-rich　Mn-based　cathode　displays　the　highest　discharge-specific　capacity　retentions　of　91.1%　after　400　cycles　at　1　C　and　94.3%　even　after　800　cycles　at　5　C.　In　particular,　the　regulation　strategy　has　well　universality　and　is　suitable　for　other　high-capacity　Li-rich　cathode　materials.