Liquid crystal polyaryl fiber is a kind of high performance fiber with high strength and high mold, high temperature and low temperature resistance, chemical reagent resistance, radiation resistance, excellent dimensional stability and other advantages, and has a unique damp and heat resistance, vibration attenuation performance and excellent wear resistance performance, the application prospect is very great. With the deepening of the research and the promotion of industrialization, it will occupy an increasingly important position in the fields of aerospace, national defense, Marine engineering, chemical engineering, electronics and electronics, sports and leisure, etc.