Abstract: As an intersection of hydrology and meteorology, hydrometeorology has had a history of nearly 100 years. Mainly focusing on high accuracy flood forecasting and forecasting long periods, the developing course of basin hydrometeorological applications and services in China is reviewed, including quantitative precipitation estimation, quantitative precipitation forecasting, extension and climate drought forecasting, other meteorological monitoring and forecasting technology, flood forecasting methods, and hydrological and meteorological forecast coupling technology. With the development of the social economy and improvements in science and technology, future developments of hydrometeorological applications and services will continue. They are needed to satisfy the demand for intelligent monitoring and early warning of rain and flood resources using meteorological decision platforms. New technology will be needed to carry out data collection and sharing research, weather and flood forecasting coupling, and construction after flood and drought disasters.