本文报道了用溶胶－凝胶法制备ＴｉＯ＿２－ＣｅＯ＿２薄膜的工艺过程及所制在薄膜的性能。研究了在不同Ｃｅ／Ｔｉ比及催化条件下浸涂液的成膜能力、胶凝过程以及薄膜的物相和光学性能。结果表明，在浸涂液中加入水或碱会便浸涂液迅速凝胶，而加无机盐会促进老化过程。浸涂液的水解－凝胶过程对薄膜的透过率、表面形貌有显著影响。随Ｃｅ／Ｔｉ比增大，浸涂液的成膜能力变坏，而薄膜的紫外吸收增大。 This paper reports the preparation of TiO2-CeO2 thin films by sol-gel method and their properties. The film-forming ability, gelation process and phase and optical properties of dip-coating solution under different Ce / Ti ratios and catalysis conditions were studied. The results showed that the addition of water or alkali in the dip coating solution will gel rapidly, while the addition of inorganic salts will promote the aging process. The hydrolysis-gelation process of dip coating solution has a significant effect on the transmittance and surface morphology of the film. As the Ce / Ti ratio increases, the film-forming ability of the dip-coating solution deteriorates and the UV absorption of the film increases.