The solid solution(Ce Zr)O_2 catalyst was synthesized, and it was modified with metal oxides by incipient impregnation. Morphology and structure were characterized by X-ray diffraction, transmission electron microscope, nitrogen ad/desorption and H_2-temperature program reduction techniques. The catalytic properties of methane oxidation were also investigated. The results showed that solid solution possessed a mesoporous structure and exhibited excellent catalytic performance. The activity of solid solution was improved effectively by nickel doping, and the optimal loading is 15 wt%. The stability of(Ce Zr)O_2 and modified(Ce Zr)O_2 indicated that the structure of pristine solid solution played a key role in promoting molecules diffusion and spatial confining oxide particle sintering. The solid solution (Ce Zr) O 2 catalyst was synthesized, and it was modified with metal oxides by incipient impregnation. Morphology and structure were characterized by X-ray diffraction, transmission electron microscope, nitrogen ad / desorption and H_2-temperature program reduction techniques. The activity of of solid oxidation was also investigated. The activity of solid solution was improved effectively by nickel doping, and the optimal loading is 15 wt%. The stability of (Ce Zr) O 2 and modified (Ce Zr) O 2 indicated that the structure of pristine solid solution played a key role in promoting molecule diffusion and spatial confining oxide particle sintering.