Abstract: CT catalyst powders (CeO2/TiO2) had been prepared with precipitation process. Taking expanded graphite based carbon/carbon composite (EGC) as matrix, CT powders were introduced on the EGC surface in the form of carbon-coated, and then CT/EGC composites of CT catalyst powders supported by EGC were obtained, and the property for treating phenol of the composite was studied. The results show that the treatment effect was best when the ratio of amount-of-substrance between Ce and Ti in CT catalyst powders was 0.002. Synergetic effect between CT photo catalytic performance and EGC adsorption was found when CT/EGC was used to treat the phenol solution, which enhanced the treatment effect of the composite towards phenol.