Abstract:The new smart drainage system is an important part of the new smart city. Based on the overall design of the new smart drainage system, the current situation of the drainage information system and the needs of different people for the smart drainage are analyzed. According to the "people-oriented" design concept, the overall design principles of demand orientation, scene guide, digital empower, business innovation, overall planning and step-by-step implementation of the new smart drainage system are expounded. The service architecture of three aspects of smart operation and maintenance, smart scheduling and smart service, and the technical architecture of six levels of perception executive level, ICT infrastructure level, data level and etc. are introduced.