Na₂La₂Ti₃O₁₀ red phosphors with various Eu³⁺ concentrations we re successfully prepared via a traditional high temperature solid state reaction method.The influence of Eu 3＋ concentration on the luminescence properties and the crystal structure of Na₂(La1－xEux) ₂Ti₃O₁₀ phosphors are investi gated.XRD results indicate that the samples doped with 0-40% Eu3＋ exhibit tetragonal phase Na₂La₂Ti₃O ₁₀,while when Eu3＋ concentration reaches 60%,another orthorhombic phase NaEuTiO_4appears.The excitation and emission s pectra for the samples are investigated.It is found that the products could be effectively excited by a b road band in ultraviolet region, which indicates an efficient energy transfer from Na₂La₂Ti₃O₁₀ host t o Eu3＋ ions.Meanwhile,bright orange-red light emissions are detected with ultraviolet light excitation.Based on th e Van model,exchange interaction of Eu3＋ ions is confirmed to be the main reason for the concentration quen ching.The reason why self-generated quenching process of Eu3＋ occurs is explained based on Auzel′s model .Besides,the temperature dependent emission spectra and fluorescence decay curves are measured.And the results re veal that thermal quenching behavior could be ascribed to the crossover process,and the activation energy is calculated to be 0.26eV by the Arrhenius model.The results show that the luminescence of Eu3＋ doped N a₂La₂Ti₃O₁₀ red phosphors has a good thermal stability.