There is still a certain gap between domestic LED packaging materials and foreign countries in research and application. Although products with high refractive index packaging materials have entered the market, they cannot be applied to LED devices that require high quality due to reliability problems. The market of high-end packaging materials is basically monopolized by the products of large foreign companies. Compared with foreign products, the materials developed or produced in China still have shortcomings such as low luminous flux, poor adhesion or high water absorption. Since several major foreign companies control the domestic sales of key raw materials in order to maintain their own monopoly position in the market for glue Innovation to prevent falling into the patent trap of foreign companies. With the promotion of the market and the investment of a large number of corporate funds, technical problems will continue to be solved by R&D personnel, and domestic LED packaging materials will surely catch up with imported packaging materials.