The glass fiber reinforced plastic bridge frame is composed of glass fiber reinforced plastic, flame retardant and other materials, and is pressed by composite molding material and stainless steel shielding net. Due to the low thermal conductivity of the selected materials and the addition of flame retardants, the products not only have fire resistance, heat insulation, self-extinguishing properties, but also high corrosion resistance. At the same time, they have light structure, aging resistance, safety and reliability. And other advantages, it can be conveniently used in conjunction with metal bridge frames, and can be used in strong corrosive environments such as chemical industry, metallurgy, and petroleum. It is divided into large-span cable trays, which are divided into three types: stepped, trough, and pallet. The general support spacing is 6m.