Fiberglass anchor rod is a new composite material product that replaces metal anchor rod. Using glass fiber as the reinforcing material and polyester resin as the substrate, the fully threaded glass fiber reinforced plastic rod is solidified under high temperature and high pressure through a pre molding mold by being pulled by a dedicated extrusion machine. Add resin anchoring agent, tray, and nut to form a fiberglass anchor rod. Mainly used for tunnel support, rock surface anchoring, slope anchoring, coal mine roadway, semi coal rock roadway support, various underground engineering support, and deep foundation pit anchoring. The product features high strength and tensile strength, superior to ordinary steel, and even more than twice the weight of steel anchor rods of the same specifications. It is light and 1/4 the weight of steel anchor rods of the same specifications. It can be easily cut without damaging the cutting machine or coal mining machine. The safety surface is anti-static, flame retardant, does not produce sparks, does not conduct electricity or heat, has high durability, high corrosion resistance, good durability, strong bonding strength with anchoring agents and concrete, and a thermal expansion coefficient close to cement. A fully fiberglass anchor rod for mining tunnels, highways, railway tunnels, and slope support, consisting of a fiberglass nut, a fiberglass tray, and a fiberglass anchor rod. One end of the fiberglass anchor rod is fitted with a fiberglass nut and a fiberglass tray, and the fiberglass nut axially limits the fiberglass tray. The other end of the fiberglass anchor rod has diagonal threads. The feature is that the fiberglass anchor rod is fitted with a fiberglass nut through a circular arc tooth shaped thread, and the fiberglass nut extends and contracts near the end of the fiberglass tray to form a neck