The glass fiber reinforced plastic cable tray is composed of glass fiber reinforced plastic and flame retardant and other materials, and is pressed by a composite molding material and a stainless steel shielding net. Due to the low thermal conductivity of the selected material and the addition of flame retardant, the product not only has fire resistance, self-extinguishing property, but also has high corrosion resistance, and also has light structure, aging resistance, safety and reliability. It can be easily used with metal bridges and used in strong corrosive environments such as chemical, metallurgical and petroleum.