Abstract: Agglomeration of nanoparticles in fabric needed to be solved. MWNT/CeO2 was prepared by electrostatic self-assembly method. The negatively charged carboxyl carbon nanotube dispersion system were oxided by mixed acids, and electrostatic self-assembly with positively charged Ce3+. Then we used NaOH as precipitant and got the MWNT/CeO2 by calcination. Besides, we used coating methods appling to cotton fabric by changing the carbon nanotubes with different mass ratio and studied its anti-uv resistance. The composites were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). It was proved that several layers of spherical CeO2 nanoparticles were deposited on external surface with high density and the size distribution ranging at 4-6 nm by TEM. The results showed that the UV-absorption property of the MWNT/CeO2 was 30% higher than nano cerium oxide when the mass ratio of CNT/CeO2 was 1:25.