The aggravation of water environment pollution has driven the water treatment technological innovation and the water treatment membrane also came into being.It uses biological separation to remove impurities to achieve the purpose of purifying water.Sulfone polymer materials is one of the widely used materials at present, have strong hydrophilic ability, excellent chemical resistance, high flux and can effectively remove impurities, bacteria, viruses and other harmful substances. These materials have passed the water treatment certification.They can be widely used in the industrial water treatment membrane, household water purifier filter element and other processing of membranes. Polyethersulfone (PES) has passed the medical certification and has the characteristics of good stability, spinnability, good biocompatibility with high temperature disinfection, lower adsorb or loss. Protein. It can be used to produce hollow fiber membrane, hemodialysis membrane and other membrane materials for medical use.