It　is　a　big　challenge　to　achieve　pure-blue　(＜=　470　nm)　perovskite　light-emitting　diodes　(PeLEDs)　with　high　efficiency　and　stability.　Here,　we　report　pure-blue　(electroluminescence　at　469　nm)　PeLEDs　with　a　full　width　at　half-maximum　of　21　nm,　high　external　quantum　efficiency　of　10.3%,　luminance　of　12　060　cd　m-2,　and　continuous　operation　half-life　of　25　h,　representing　the　state-of-the-art　performance.　This　design　is　based　on　strongly　quantum　confined　CsPbBr3　quantum　dots　(QDs)　with　suppression　of　Auger　recombination,　which　was　enabled　by　inorganic　ligands,　replacing　initial　organic　ligands　on　the　QDs.　The　inorganic　ligand　acts　as　a　＂capacitor＂　to　alleviate　the　charge　accumulation　and　reduce　the　exciton　binding　energy　of　the　QDs,　which　suppresses　the　Auger　recombination,　resulting　in　much　lower　efficiency　roll-off　of　PeLEDs.　Thus,　the　devices　maintain　high　efficiency　(＞10%)　at　high　luminance　(＞2000　cd　m-2),　which　is　of　considerable　significance　for　the　display　application.