Abstract: Chemical looping methane reforming is a potential route to co-produce syngas and hydrogen by using the oxygen carrier (metal oxide). The oxygen carrier CeO₂/LaFeO₃ was prepared by sol-gel method, and the structure and oxygen supply capacity of the oxygen carrier were analyzed by X-ray powder diffraction and hydrogen temperature programmed reduction. The influence of CeO₂ ratio and reaction temperature on the performance of the oxygen carrier were discussed through fixed bed reaction tests. The content of CeO₂ had a significant effect on the oxygen supply capacity of the oxygen carrier. Increasing reaction temperature not only was conducive to methane activation, but also enhanced lattice oxygen migration in the oxygen carrier. A suitable reaction temperature could match methane activation with lattice oxygen migration, thereby improving the selectivity of the oxygen carrier. Experimental results showed that performance of the oxygen carrier was in the optimal when CeO₂ content was 10% and reaction temperature was 850 ºC. CH₄ conversion rate could reach 94%, H₂ selectivity and CO selectivity could reach 90% and 83%, respectively. The oxygen carrier 10%CeO₂/LaFeO₃ could maintain stable reaction performance and structure in the redox cycles.