Silicone high-temperature resistant coating was prepared with silicone resin as film-forming material and natural fine quartz as main filler.The effects of natural fine quartz content on heat resistance,flexibility and adhesion of coatings were studied.The result showed that the addition of natural fine quartz improved the heat resistance of silicone resin.The modified formula of the best high temperature resistance coating was determined.Coating performance tested results showed that the heating-resistant temperature was 550℃,the flexibility was 1 mm,the attached force level was 1 and the pencil-hardness test was 5H.AFM photo showed that the coating thickness was uniformity,the distribution of fillers was good and dispersed.