Based on the filter of meteorological and hydrological stations and according to the cloud distributed storage technology and meteorological data processing technology, the main idea, function structure, and product application of the system design are introduced. The real-time collection process of precipitation data is combed, and the data processing and sharing system are established. The system integrates the rainfall data of the Yangtze River from meteorological and hydrological departments, and realizes the efficient data exchange and sharing application with hydrology department.