The flax fiber exists in the bast tissue of the flax stem. After retting and degumming, part of the gum is removed, so that the adhesive fiber bundles are partially loose. Then, the flax fiber is processed into "beat flax" by pressing, rolling and beating, which is a process fiber composed of 10~20 single fibers. Linen cloth has high fiber strength and is not easy to tear or puncture. It can be scraped and pressed by the color mixing knife.

Flax, also known as crow flax and flax, is used for fiber separation, oil, and fiber oil dual-use, all of which are annual herbs. Because of good moisture absorption, fast moisture transmission and relatively thin diameter, it is one of the main fiber raw materials for clothes in spring and summer. Usually, the cloth woven from flax fiber is called flax fabric.