A　series　of　TiO2　sols　with　different　pH　values　prepared　by　the　sol-gel　method　under　acid　conditions　were　coated　onto　the　surfaces　of　ceramic　tiles　to　obtain　the　corresponding　TiO2　films　respectively.　The　surface　gloss　and　roughness　of　the　as-prepared　TiO2　films　were　measured　by　a　glossmeter　and　an　atomic　force　microscope　(AFM)　respectively.　It　has　been　found　that　the　surface　gloss　of　the　as-prepared　TiO2　films　is　decreased　but　its　roughness　is　increased　with　the　increase　of　the　pH　value　of　TiO2　sol.　Moreover,　the　measurement　result　of　the　as-prepared　TiO2　sols　by　Zetasizer　shows　that　the　zeta　potential　of　TiO2　sol　is　increased　with　the　increase　of　pH　value　of　TiO2　sol.　It　is　proposed　that　the　increase　of　zeta　potential　will　cause　a　stronger　repulsion　of　particles　in　TiO2　sol,　resulting　in　a　rougher　surface　and　then　lower　surface　gloss　of　the　corresponding　TiO2　film.