Abstract: In the last 50 years, several generation scientists of CAMS devote to the study of heavy rainfall in China. A great achievement in the heavy rainfall studies are made. Especially in the recent 10 years, three big research programs of the state class are implemented or are being implemented in Chinese Academy of Meteorological Sciences, which focus on heavy rainfall of Southern China, including experiments and studies of heavy rainfall in Southern China and within Meiyu front in the mid-lower reaches of the Yangtze River, and heavy rainfall causing flood in South China with the study scope more comprehensive than the above two programs.Through the implementation of the above programs, three dimensional structure and formation mechanisms of the heavy rainfall in southern China and within Meiyu front in the mid-lower reaches of the Yangtze River, as well as the theories and the methods of remote sensing detection and measurement of the meso-scale heavy rainfall and the development of the meso-scale heavy rainfall numerical prediction systems with 3Dvars are all made several important achievements. Some of them are applied into operation in the operational divisions within different levels of China Meteorological Administration. As a result, economic and social benefits contribute from them in China. In the implementing of the 973 state program, the research focuses on the study and experiment for heavy rainfall systems with meso-β scale. Though these studies and experiments, wish is made that it is possible to enhance the capability of detecting and forecasting heavy rainfall in South China, and also it is hoped that important contribution could be made to strengthen the capability of reducing and protecting the disasters in China.