The Eu3+ rare-earth organic complex with double ligands of TTA and 5NO2Phen is synthesized. The characteristics of this compound are studied by elemental analysis,TG-DTA,infrared spectra,UV-visible absorption spectra. From the UV-visible absorption spectra,it can be seen that there are two absorption peaks locating at 340 nm and 270 nm,which correspond to the absorption peaks of TTA and 5NO2Phen,respectively. Under the excitation of 350 nm light,three characteristic emission peaks of Eu3+ ions are obtained:5D0→7F0 (583 nm),5D0→7F1(593 nm) and 5D0→7F2(612 nm) . Experimental results demonstrate that the ligands can transfer the absorbed energy to Eu3+ ion. The ligands can effectively enhance the luminescent performance of Eu3+ ion. Electroluminescence devices ITO/PEDOT:PSS/PVK:Eu(TTA)35NO2Phen /BCP/Alq3/Al based on Eu complex as the active layer are fabricated,and the red emission color coordinate is about (x=0.51,y=0.31) under 18 V driving voltage.