Nanometer silicon dioxide features small particle size and large surface area and special properties unique to it like small size effect, surface and interface effect and quantum size effect, Due to its strong ultraviolet and infrared reflective characteristics, it can effectively improve the service performance of coatings after being added to the coatings. In view of the basic properties of nanometer silicon dioxide, its modification of coating performance and issues existing in the coating application field, the research status and development prospect of nanometer silicon dioxide in terms of coating modification are presented.% 纳米二氧化硅粒径小、比表面积大，具有纳米材料特有的小尺寸效应、表面界面效应、量子尺寸效应等特殊性能。其极强的紫外、红外反射特性，添加到涂料中能有效提高涂料的使用性能。针对纳米二氧化硅的基本性质、其在不同涂料应用中引起的涂料性能改变，以及在涂料应用领域中存在的问题进行研究分析，展望了纳米二氧化硅对涂料改性的研究及发展前景。
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