Glass fiber reinforced plastic trough cable trays are a fully enclosed cable tray suitable for laying computer cables, communication cables, thermocouple cables, and other sensitive system control cables. They provide excellent protection against shielding interference and heavy corrosion environments for cables. These glass fiber reinforced plastic trough cable trays are lightweight with high load-bearing capacity, weighing only 1/4 of cable weight and 1/10 of cement cable trough weight, and have a service life of 30-50 years.