GTOIS Membrane Management System is an online to offline intelligent operation system, which provide customers with professional online and offline service. Online service is based on the expert system software GTOIS developed by the real operational data and management experience accumulated throughout decades of years. By using the intelligent algorithm of the expert system, GTOIS is able to find out the potential problems and the optimized solution for the operation and management of the membrane system, and provide the remote online guidance of the expert team. The offline service include regular polling, problem solving and operation optimization by the professional operation team.