Surface treatment can improve the bonding performance of glass fiber and resin, and greatly improve the strength, electrical, water resistance, climate resistance and other properties of glass fiber reinforced composites. Even in wet state, it improves the mechanical properties of the composite material, and the effect is very remarkable. The use of silane coupling agents in glass fibers has become quite common. Silane coupling agents used in this area account for about 50% of the total consumption. Among them, the most used varieties are vinyl silane, amino silane, methacrylic oxysilane, etc. The filler plastic can be surface-treated in advance or added directly to the resin. It can improve the dispersibility and adhesion of fillers in resins, improve the compatibility between inorganic fillers and resins, improve the process performance, and improve the mechanical, electrical and weather resistance of filled plastics (including rubber). Adhesives used as sealants, adhesives, and coatings can improve their bonding strength, water resistance, weather resistance, etc. Silane couplings can often solve the problem that certain materials cannot be bonded for a long time. The principle of action of a silane coupling agent as a tackifier is that it itself has two groups; one group can be combined with the bonded skeleton material; and the other group can be combined with a polymer material or adhesive to form a strong chemical bond at the bonding interface, which greatly improves the bonding strength. Silane coupling agents are generally applied in three ways: one is as a surface treatment agent for skeleton materials; the second is added to the adhesive, and the third is directly added to the polymer material. The first two methods are better from the point of view of maximizing their effectiveness and reducing costs.