Resonant oavity light emitting diodes(RCLED) of 650 nm wavelength was epitaxied by metal organic chemical vapor deposition(MOCVD),the emission property of photoluminescence(PL) and electro-luminesence(EL) was characterized.The PL intensity of RCLED is about 1/20 of common LED;the EL spectral purity is enhanced,EL spectral full width of half maximum(FWHM) is decreased from common LED's 20 nm to RCLED's 3-4 nm.The device characterization show that we can obtain above 1.45 mW EL emission power at 69 mA,2.71 V.