The relationship between Chinese and Indian summer (June to September) monsoon rainfall is examined using a data set available from 1951 to 1980. The structure of the large scale circulation which linked together the rainfall making processes in these two regions is analyzed. The main results are as followed:1. The correlation coefficients between the summer monsoon rainfall in China and India are calculated. The maximum of positive correlation is found between Indian rainfall and rainfall in North China. A secondary maximum of positive co-relation is located in the region from the upper reaches of the Yellow River to the western part of Sichuan province, but the area with significant correlations is not as large as in North China. In western China, including the Tibet and Xin Jiang, negative correlations are predominated. However, the rainfall along the Yangtze River valley, especially in the middle and lower reaches, where the Meiyu usually occurs, the correlation coefficients remain small.2. The analysis of the two teleconnected regions shows that the hot low over South Asia plays an importent role, because its intensity is resposible for the variations of the summer monsoon intensity over both India and East Asia. As the summer monsoon regulates rainfall making processes, a close connection is found between the rainfall in India and China.3. The correlation coefficients between the summer monsoon rainfall over the whole India and the regional rainfall in China vary from positive in one Chinese region to negative in another, because the relationship between the intensity of East Asia summer monsoon and the rainfall in different places over China also varies from one region to another. As the correlation between summer rainfall and the intensity of East Asia summer monsoon is strong the regional rainfall in china is closely correlated with the Indian summer monsoon rainfall.