This paper mainly analyzes the problems existing in the existing sewage treatment system in an industrial town in southern China.Based on the current treatment capacity of the sewage plant,the idea of pipe network diversion renovation is put forward,and the operation and maintenance management level of the pipe network is improved by implementing intelligent diversion technology and industrial wastewater monitoring and control system.The problem of industrial wastewater treatment is solved by optimizing pretreatment and biochemical treatment process for the newly-built sewage station.