Cylindrical shaped CeO2-Al2O3 support was prepared by calcining the pelletized powder mixture of cerium carbonate, aluminum hydroxide and poly-vinylalcohol. The specific surface area and porosity of the support were improved relative to those obtained by a conventional method. Ru was loaded on the porous carrier by using ruthenium trichloride and aqueous ammonia. The dispersion of Ru. was improved 2.2 fold as much as that in the case using a conventional catalyst. The improved catalyst showed high activity for pre-reforming of liquefied petroleum gas (LPG) with low proportion of S/C as 0.8 at 450 degreesC. Finally, 7000 h of sustained run of the pre-reforming was successfully achieved on that catalyst.