The "Tianhai" polyester filament geotextile is made by the method of forming and solidifying polyester filaments, and the fibers are arranged in a three-dimensional structure. It has good tensile strength, tear resistance, rupture resistance, puncture resistance, biochemical resistance, acid and alkali resistance, aging resistance, etc., and has a wide pore size range, tortuous pore distribution, and good permeability. And filtering performance. Polyester filament singeing geotextiles are developed for pavement and have a unique patent for single-sided and double-sided singeing to prevent cracks and extend the service life of asphalt pavement.