High-voltage　lithium-ion　batteries　(HVLIBs)　are　considered　as　promising　devices　of　energy　storage　for　electric　vehicle,　hybrid　electric　vehicle,　and　other　high-power　equipment.　HVLIBs　require　their　own　platform　voltages　to　be　higher　than　4.5　V　on　charge.　Lithium　nickel　manganese　spinel　LiNi0.5Mn1.5O4　(LNMO)　cathode　is　the　most　promising　candidate　among　the　5　V　cathode　materials　for　HVLIBs　due　to　its　flat　plateau　at　4.7　V.　However,　the　degradation　of　cyclic　performance　is　very　serious　when　LNMO　cathode　operates　over　4.2　V.　In　this　review,　we　summarize　some　methods　for　enhancing　the　cycling　stability　of　LNMO　cathodes　in　lithium-ion　batteries,　including　doping,　cathode　surface　coating,　electrolyte　modifying,　and　other　methods.　We　also　discuss　the　advantages　and　disadvantages　of　different　methods.