The zirconium oxide ceramic reinforced with rare earth were sintered by dry pressure at an optimal sintering tem-perature of 1 450 C with nanoscale zirconia oxide particles , rare earth Y203 and La,03,PVC as raw materials.The influ-ence of single rare earth on the sintering and thermal shock resistance of ZnO,ceramic was investigated first ,and the bestadditive amount o of Y203 and La,0 were identified as 3% and 5%o , respectively.Under the 3% additive amount o of mixrare earth , the influences of five different additive proportions of Y203 and La,0, on the sintering , hardness and thermalshock resistance were investigated.The results showed that when the additive proportion of yttrium oxide and lanthanum ox-ide was 3∶ 1 , the ZxO ,ceramic materials had the best peformance with the thermal shock resistance of 15 times, the hard-ness of 90.2 HRB, and the density of 5.13 g/ cm' .