This article pays much attention to introduce three types of hydrolytic decomposition, processing condition and products of hydrolytic decomposition of waste polyacrylonitrile fibre and their industrial uses in material product, resinous synthesis, textile and dye printing,coating and bonding agent,petroleum and water treatment and so on. At the same time, it introduces solvent chemistry treatment and physical treatment about wate polyacrylonitrile fibre and its use.
