In view of the poor sintering resistance of La2Ce2O7 and the low thermal expansion coefficient of La2Zr2O7，the La2Ce2O7 core was first synthesized by hydrothermal method, and then the La2Ce2O7@La2Zr2O7 core-shell nano-powder was successfully synthesized by coprecipitation method. The powder was pre-pressed into pellets and then sintered at 1 100 ℃、1 300 ℃ and 1 500 ℃ for different hours and sintered at 1 100 ~1 500 ℃ for 6 hours, so as to investigate the effect of temperature on its sintering resistance. The morphology and composition of the materials were analyzed by scanning electron microscopy, transmission electron microscopy and energy dispersive spectrometer. The density and micro-hardness of the samples were also tested. Experimental results showed that the La2Ce2O7 core had a cubic or octahedral shape with the average size of about 200 nm. The La2Zr2O7 shell was amorphous structure, and exhibited good enveloping effect on forming a La2Ce2O7@La2Zr2O7 core-shell structure. Constant temperature sintering tests found that the density change rate of the core-shell structure was kept within 2.1%, which was much lower than that of La2Ce2O7 and La2Zr2O7. The distribution of pore and grain size was uniform without cracks and sintering. When sintering temperature was below 1 300 ℃, the La2Ce2O7@La2Zr2O7 was uniformly porous, its density change rate was stable within 10.6%, the grain size was maintained at about 450 nm, and the grain growth rate was close to that of La2Zr2O7，proving its good sintering resistance. When the temperature was higher than 1 300 ℃, however, obvious sintering phenomenon occurred. The densification of La2Ce2O7@La2Zr2O7 accelerated, and its pore size increased and grains grew rapidly, nearly reaching to that of La2Ce2O7. Moreover, the micro-hardness of La2Ce2O7@La2Zr2O7 was slightly higher than that of La2Ce2O7，but much lower than that of La2Zr2O7.