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Lu2O3∶Eu3+ nanopowders were prepared by co-precipitation and solve-thermal methods, respectively.Lu2O3∶Eu3+ nanopowders were synth-esized by co-precipitation process with NH3·H2O, NH4HCO3 and the mixed solution of NH3·H2O and NH4HCO3 as the precipitants, respectively.It is found that powders from the mixed precipitant method exhibits best microstructural morphology with weak agglomeration state and particle size distribution.The microstructural evolution of Lu203∶Eu3+ phosphor powders obtained by above two methods were analyzed and compared in the same calcination conditions, solve-thermal method is better than co-precipitation method on morphology and luminescent properties.