Methyltrimethoxysilane is a trifunctional organosilane coupling agent because all three alkoxy groups are hydrolyzed, and it contains a methyl group that imparts organic properties to the product. Its role is the same as other silane coupling agents by its own two reaction functional groups, combining two materials with different properties chemically, so it is mostly used in the composite industry. Methyl trichemicalbook methoxysilane is mainly used for glass fiber surface hydrophobic treatment and plastic laminate surface treatment, the silane dipholian agent in the product addition amount of only 0.5% ~ 4% can greatly improve the heat deflection temperature of the product, improve the mechanical properties, electrical properties and processing performance of the product. Therefore, it is an important auxiliary in aviation, aerospace, military, medicine and health, civil and other aspects, and has great market potential.