Abstract: Rutile nano-titanium dioxide was modified by surfactant to improve its dispersion in organic solvents. The modified nano-titanium dioxide was respectively used in furniture paint,anticorrosive paint and automotive paint. The ultraviolet resistance of the paints was achieved by detecting the color difference and gloss loss rate under ultraviolet aging. The results show that the nano-titanium dioxide modified by B/C surfactant has excellent dispersion in the paints. Excellent anti-ultraviolet performance can be obtained in the paints by application of the modified nano-titanium dioxide,and the color and gloss retention properties of the paints are improved enormously.