It is characterized by cable protection, good insulation, thermal insulation, cold resistance, flame retardant, anti-aging, anti-corrosion and acid and alkali resistance. The fiberglass-reinforced cable duct is light in weight and large in bearing strength. Generally, its weight is one fourth of the steel cable duct and one tenth of the cement cable duct. It can be easily installed with low costs and no fire required in the construction. It is suitable for the alpine areas, highland areas and mountainous areas and there are incomparable advantages in comparison with the steel cable duct.