Abstract: Ce0.9Zr0.1O2 solid solutions were prepared by co-precipitation, modified sol-gel (CGS), inverse microemulsion and hydrothermal synthesis method, respectively. The corresponding sulfur transfer catalysts containing Ce0.9Zr0.1O2 solid solutions were made by acid process. The Ce0.9Zr0.1O2 solid solutions was characterized by X-ray diffraction (XRD), N2 adsorption-desorption, oxygen storage capacity test (OSC) and temperature-programmed reduction (H2-TPR). The corresponding sulfur transfer catalysts were evaluated under conditions similar to those in the typical FCC unit. The results indicate that Ce0.9Zr0.1O2 solid solution prepared by CSG method shows a relative higher thermostability, better redox behavior and larger OSC value which contribute to a better desulfurization rate of the corresponding sulfur transfer catalysts under the conditions of lean oxygen.