Ding Xiaowei et al. obtained a phenyl-containing hydrogen-based silicone resin by first hydrolyzing alkoxysilane to prepare a prepolymer, and then condensing it with hydrogen-containing alkoxysilane. The process is simple, controllable and environmentally friendly, and the refractive index of the product can reach up to 1.531. The inorganic ultrafine particle composite silicone LED packaging material prepared by introducing inorganic oxide particles with high refractive index has the advantages of high refractive index and strong resistance to ultraviolet radiation.