An LED (Light-Emitting Diode) packaging silica gel with high refractive index, light transmittance and power is composed of two adhesives A and B according to parts by weight, wherein the adhesive A comprises the following components: phenyl vinyl polysiloxane, phenyl silicone, a quick-drying agent, a light stabilizer and an antioxidant; and the adhesive B comprises the following components: phenyl vinyl polysiloxane, phenyl hydrogen polysiloxane, a retarder, a defoamer and an ultraviolet absorber. The LED packaging silica gel employs a two-component packaging manner; the production process of the LED packaging silica gel is simple and easy to implement; the storage of the LED packaging silica gel is convenient without special requirement for the environment; and the period of storage is long, and production is facilitated. In use, the silica gel formed through simple blending is good in bonding strength, high in strength, high in light transmittance and refractive index, and has the advantages of being excellent in high-temperature resistance, good in aging and weather resistance and the like.