These materials come from plants, such as corn, wheat, etc., which are transformed into lactic acid by biological bacteria fermentation technology, and then polymerized and spun. They have excellent biodegradability, biocompatibility and bioabsorbability, and belong to green environmental protection materials. At the same time, it has the advantages of comfort and breathability of natural fibers and high strength and wear resistance of synthetic fibers, which makes the fabric have certain stretchability and resilience. The fabric has the characteristics of lightness, breathability and good cotton feeling, and its size and specifications are stable. Far-infrared particles are added to the fabric. When it rubs against the body, sweats or is exposed to sunlight, the fabric will generate heat, which can provide extra heat for the wearer, so it is suitable for wearing in cold weather and meets people’s needs for comfort and health.