Twisting is the process of twisting monofilament or ply yarn (multiple wires winding each other) to obtain a certain twist direction and twist number. According to the specifications of silk fabric, the appearance effect or physical mechanical properties of silk yarn can be changed by twisting process, which can improve the weaving performance of silk yarn and meet the requirements of appearance and different uses of silk fabric. What is the role of twisted wire? (1) increase the strength and abrasion resistance of silk yarn (within the critical twist range) to reduce fuzzing and breaking and improve the fastness of silk fabric. (2) make the silk thread have certain shape or color, give the appearance of fabric with refraction, crepe or loop, knot and other effects. (3) increase the elasticity of silk thread, improve the crease resistance and air permeability of the fabric, and make the fabric wear cool and comfortable.