blending PET with PBS could improve degradable property. The studies of microbiocidal effects of TiO2 and ZnO photocatalytic reaction were carried out with E.coli and S.aureus [5-12]. PET/PBS blends are then improved mechanical and antibacterial properties by the addition of either TiO2 or ZnO. For this study, we compare mechanical, thermal, and antibacterial properties of PET/PBS thin film for food packaging obtained between TiO2 and ZnO.