The processing technology of Ce doped-BaHfO3 nano-powders that is prepared by co-precipitation （with oxalic acid and ammonia as the precipitant, respectively） was investigated. XRD and TEM were employed to analyze the effects of different precipitates on the phase change, morphologies of powders and influences of Ce^3＋ dopant content on the excitation and emission spectra of powders. The results show that spherical BaHfO3：Ce nano-powders are synthesized only at 900℃ for 2 h and the average diameter is about 15 nm with ammonia as precipitant. But using oxalic acid as precipitant, the powders have polygonal morphology after calcining at 1 000 ~C for 2 h and the average diameter is about 60 nm. Minor Ce^3＋ has no effect on the crystal structure. The relative intensity of photoluminescence peak has the maximum value when the Ce^3＋dopant content is 0.3% （mole fraction）. The concentration quench occurs when the Ce^3＋ dopant content exceeds 0.3%. The emission character is resulted from 5d→^2F5/2 and 5d→^2F7/2 transitions of Ce^3＋ and both the excitation and emission spectra are wide band.