Borocarbonitride　(BCN)　materials　are　newly　developed　oxidative　dehydrogenation　catalysts　that　can　efficiently　convert　alkanes　to　alkenes.　However,　BCN　materials　tend　to　form　bulky　B2O3　due　to　over-oxidation　at　the　high　reaction　temperature,　resulting　in　significant　deactivation.　Here,　we　report　a　series　of　super　stable　BCN　nanosheets　for　the　oxidative　dehydrogenation　of　propane　(ODHP)　reaction.　The　catalytic　performance　of　the　BCN　nanosheets　can　be　easily　regulated　by　changing　the　guanine　dosage.　The　control　experiment　and　structural　characterization　indicate　that　the　introduction　of　a　suitable　amount　of　carbon　could　prevent　the　formation　of　excessive　B2O3　from　BCN　materials　and　maintain　the　2D　skeleton　at　a　high　temperature　of　520　&　DEG;C.　The　best-performing　catalyst　BCN　exhibits　81.9　%　selectivity　towards　olefins　with　a　stable　propane　conversion　of　35.8　%,　and　the　propene　productivity　reaches　16.2　mmol　h(-1)　g(-1),　which　is　much　better　than　hexagonal　BN　(h-BN)　catalysts.　Density　functional　theory　calculation　results　show　that　the　presence　of　dispersed　rather　than　aggregated　carbon　atoms　can　significantly　affect　the　electronic　microenvironment　of　h-BN,　thereby　boosting　the　catalytic　activity　of　BCN.