Fiber grade polylactic acid chips have narrow relative molecular weight distribution, low impurity content, and good fiber forming properties. Through extrusion and stretching equipment, short fibers and different specifications of filament can be produced. Polylactic acid short fibers can be used as fillers, as well as in pure or blended spinning, and can also be used for the production of hot air, hot rolled, spunlaced, and needle punched non-woven fabrics. Polylactic acid fibers have the characteristics of both chemical fibers and bio based fibers, with excellent mechanical properties, skin friendliness, drape resistance, antibacterial and mold resistance, as well as high resilience. They are widely used in fields such as clothing, bedding, daily life, medical and health care.