In　order　to　resolve　the　prevailing　problems　in　conventional　light-emitting　diodes　(LEDs),　novel　high-efficiency　tunneling-regenerated　multi-active-region　(TRMAR)　LEDs　are　proposed,　which　have　such　advantages　as　low　heat　generation,　carrier　overflow　level　and　non-radiation　recombination　rate　and　whose　quantum　efficiency　and　the　output　optical　power　can　be　scaled　with　the　number　of　the　active　regions.　Experiments　show　that　the　on-axis　luminous　intensity　of　TRMAR　LEDs　increases　linearly　with　the　number　of　active　regions.　The　novel　LEDs　have　high　quantum　efficiency　under　low　current　injection　and　their　maximum　on-axis　luminous　intensity　exceeds　5　candelas　at　20　mA　current　injection　at　the　peak　wavelength　of　625　nm　with　a　15degrees　angle　cap.