The CeO2 doped 0.97(K0.5Na0.5)NbO3-0.03Bi(Zn2/3Nb1/3)O3-1.0%CeO2 (0.97KNN-0.03BZN-1.0CeO2) leadfree ferroelectric ceramics were prepared by the solidstate reaction method. The effect of different sintering temperature (1 120 ℃, 1 130 ℃ and 1 140 ℃) on phase composing, microstructure and dielectric and ferroelectric properties for samples was investigated. The results showed that the density of 0.97KNN0.03BZN-1.0CeO2 ceramics was increased with the increasing of sintering temperature.XRD results showed that the ceramic samples were pure perovskite phase. The temperature dependence of the dielectric permittivity of samples exhibited that 0.97KNN0.03BZN-1.0CeO2 ceramics sintered at 1 130 ℃ showed obvious relaxor property. Its dielectric loss was less than 3%. The electric hysteresis loops displayed that the leakage current of ceramics could be effectively reduced at higher sintering temperature.