Polyester staple fiber is an ideal textile fiber. The products produced with it are crisp and wrinkle-free, durable, easy to wash and fast-drying, and are deeply loved by consumers. The development of polyester fabric with high moisture absorption, perspiration and quick drying is of great significance for improving the comfort of clothing, and it is very suitable for sportswear with high competitive level, tooling under high temperature and high humidity working conditions, outdoor clothing and other fields.This kind of 1.4D*38MM recycled polyester staple fiber was produced by virgin chips, it can be used to produce yarn,non-woven.