Abstract: This article simply introduced the development history of pure chitosan fiber both at home and abroad. Focusing on the research and breakthrough of industrialized green spinning technology in production of pure chitosan fiber. Described the application of pure chitosan fiber in Medical, Hygienic, Textile, Aerospace, Military industry, Filter, etc. Will strengthen the industry-university-research cooperation, and promote the research and development of pure chitosan fiber related products in high-end application. In order to better play the important role of pure chitosan fiber in promoting human health and improving the quality of life,thus to promote the pure chitosan fiber industry sustained, healthy and rapid development.Thus to promote the sustained, healthy and rapid development of chitosan fiber industry.

Key words: chitosan fiber, industrialized green spinning technology, compound rapid deaeration, thixotropic fluid, plug flow high temperature solidification, reciprocation countercurrent washing