The surface of rutile titanium dioxide was coated with sodium hexametaphosphate as dispersant, zirconium dioxide as coating agent and sodium silicate nine water as silicon coating agent. Nine orthogonal experiments were designed to investigate the effects of stirring speed, reaction temperature, dispersant dosage and curing time on the properties of rutile titanium dioxide coating. Sedimentation experiment, Zeta potential test, scanning electron microscopy, and high resolution mass transmission electron microscopy were adopted to characterize the rutile titanium dioxide before and after coating. The results showed that the dispersion of coated rutile titanium dioxide was significantly improved. It was found that when the stirring speed was 350 r/min, the reaction temperature was 60 ℃, the amount of dispersant was 0.1%, and the curing time was 80 min, the composite coating process of rutile titanium dioxide was optimized.