This paper researched the optimizing technology of the rutile titanium dioxide on ZrO2-Al2O3 both dropwise add coated with orthogonal experiment L9(34)by sol-gel method.Effect of the rutile titanium dioxide ZrO2-Al2O3 coated and coated mechanism were investigated by Nano-ZS,scanning electron microscopy(SEM),transmission electron microscopy(TEM)and energy spectrum(EDS)etc..The optimum process conditions of the rutile titanium dioxide ZrO2-Al2O3 coated was obtained.Two layers compact and uniform aluminium oxi...