Based on big data water quality monitoring design, monitoring data collection, processing, structure analysis, state presentation as the process, will be based on big data water quality monitoring results can be presented through the visual form, in the design of big data-based water quality monitoring, divided into three levels: the basic layer, data layer and the middle layer. Among them, the basic layer is mainly deployed related to water quality data collection equipment, including water quality data sensors, online monitors, spot monitors and other water quality data collection equipment; data layer is the storage of water quality and other relevant data information, the deployment of the basic database and water quality database; intermediate layer is mainly from the data layer of the database to obtain relevant data, complete water quality data acquisition and numerical data monitoring and other data mining services, and do a good job of data management. and do a good job of data management.