The fiber surface is directly bombarded with high-power low-temperature plasma to produce physical modification (making the fiber surface rough grooves) and chemical modification (activating functional groups to produce polar groups such as -OH, -COOH, -C=O). The core acting groups of post-finishing and hydrophilic agent are -OH and -COOH. We have intrinsically modified the molecular chain on the surface of the fiber dimension, which really has a long-lasting moisture absorption and quick drying function.