Abstract: The application of TiO₂ in plastic products is explored in this paper and a comprehensive investigation on TiO₂ in cluding dispersion,weatherability,processing performance and production costs is conducted.The results showed that the dispersion of TiO₂ could be improved when the size of TiO₂ particle is increased,the weathering performance of Cr501 was better than that of B101 and the productions could be expanded and cost could be reduced with the addition of inorganic fillers.