Abstract: Two ternary complexes of Sm(Ⅲ) and Tb(Ⅲ) were synthesized and characterized by elemental analysis, infrared spectroscopy, thermogravimetry-differential thermal analysis and fluorescence spectra. The results showed that both complexes exhibited fluorescent emission, but the fluorescence intensity of terbium complex was stronger than samarium complex. The advantages of band sharp and good monochromaticity make it as a promising organic electroluminescence material.