The　optical　performance　of　AlGaInP　light　emitting　diodes(LEDs)　with　different　surface　structure　has　been　simulated　using　transmission　matrix　formalism.　PECVD　and　magnetron　sputtering　ITO　are　used　to　fabricate　LEDs　with　different　surface　structures　on　DBR　epilayer　substrates.　The　test　results　show　that　the　LEDs　with　coupled　antireflection　coatings　of　λ/4n　SiON　and　λ/2n　ITO　have　the　best　optical　performance.　At　20　mA　injection　current,　the　vertical　output　light　intensity　is　141.7　mcd,　and　the　luminous　flux　is　0.4733　lm.　Compared　with　the　same　structural　LEDs　without　antireflection　coatings,　the　vertical　output　light　intensity　and　the　luminous　flux　are　greatly　improved　by　a　factor　of　138%　and　91%　respectively.