CeO2 coated multiwalled carbon nanotubes(MWCNTs)composite photocatalysts were prepared by hydrothermal method using MWCNTs as a reaction template and ammonium ceric nitrate as a ceric source. The samples were characterized by field emission scanning electron microscopy(SEM). The photodegradation of amoxicillin solution was used to evaluate the photocatalytic activity of the catalyst under UV and visible light irradiation. The results suggest that the CeO2 coated MWCNTs keep tube morphology with the pristine MWCNTs. The prepared CeO2/CNTs photocatalyst shows higher light photocatalytic activity because the MWCNTs increase the adsorption of reactant on the photocatalyst a, which can enhance the absorption and utilization of light.