Abstract: To improve the mechanics and dispersion performance of attapulgite (ATP) in epoxy acrylate (EA) coating, SiO2/ATP composites were prepared by chemical precipitation and then modified with silane coupling agent KH570 to obtain KH570-g-SiO2/ATP composites. The composites were characterized by TEM, FT-IR, XRD and TG methods. The UV-curable KH570-g-SiO2/ATP /EA composite coating was fabricated by the blend method. The effects of KH570-g-SiO2/ATP content on the impact-resistance, the flexibility of the KH570-g-SiO2/ATP /EA composite coatings were investigated. The results show that the impact-resistance of the KH570-g-SiO2/ATP /EA composite coating increases from 15 cm to 35 cm, the flexibility increases from 15 mm to 5 mm when the KH570-g-SiO2/ATP dosage is 5%. In addition, KH570-g-SiO2/ATP has a better dispersibility in the EA composite coating than ATP, SiO2/ATP and KH570-g- ATP.