Radioactive zeolite waste is a potential threat to human health and the living environment. Therefore, thetreatment and disposal of radioactive zeolite waste is an urgent problem to be solved. In this work, theco-doped simulated radioactive contaminated zeolite has been successfully immobilized. The effect ofsintering temperature on the microstructure, mechanical properties and chemical durability of codopedzeolite sintered matrix was evaluated. Samples were sintered at 1400 C and 1500 C for 1 h. Asthe sintering temperature increases, the total solid solubility limit of sintered samples increased from25 wt.% (Nd2O3: 15 wt.%, CeO2: 10 wt.%) to 55 wt.% (Nd2O3: 20 wt.%, CeO2: 35 wt.%,). The greaterVickers hardness (6.73 GPa) and density (2.93 gcm3) were achieved in sample No. 9 sintered at1500 C. The normalized leaching rates of Ce and Nd in sample No. 9 sintered at 1500 C are0.83 10-7 gm2d-1 and 3.42 10-7 gm2d-1, respectively.