The invention relates to the technical field of pipes, in particular to a fiberglass-belt-reinforced thermoplastic resin winding pipe and a preparation process thereof. The fiberglass-belt-reinforcedthermoplastic resin winding pipe is characterized in that the fiberglass-belt-reinforced thermoplastic resin winding pipe comprises inner layer resin and outer layer resin; fiberglass belts are evenlywound in the middles of the inner layer resin and the outer layer resin; the fiberglass belts are each in an omega shape; planar extension parts are arranged on the two sides of the bottom of each fiberglass belt; and bonding resin is arranged between the extension parts of every two adjacent fiberglass belts. The pipe is solid, the fiberglass belts are utilized to replace steel belts, thus the weight of the pipe is greatly reduced, and meanwhile the cost is reduced; seams are bonded through the thermoplastic resin, and thus the pipe cannot be damaged and rusted; and the preparation process of the fiberglass-belt-reinforced thermoplastic resin winding pipe is simple, and the application prospects are quite wide.