Silver ion autotelic a bactericidal activity, and nanometer silver particles exhibits a strong bactericidal activity. When explored to UV light nanometer titanium dioxide (TiO2) exhibits a strong bactericidal activity. In this study, polyester fabric was treated by nanometer Ag-TiO2 in different concentration, which can be photocatalyzed by UV light.. Polyester is a kind of high physical property fiber. Due to its high crystallinity, polyester metergasis processing was restricted. In this study, we use acryl resin to increase the durable property of polyester. The result of this study shows that potocatalysis treated polyester fabric damage both Gram(-) bacteria and Gram(-) bacteria cells. According to acryl resin the doses, the durable property of treated polyester fabric increased.