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The precipitation variation over Southeast China during recent 50 years and its relationship with SST are analyzed by using the SVD (Singular Value Decomposition) method. The results show that the India Ocean, South China Sea and the eastern Pacific Ocean were key regions for influencing the precipitation over Southeast China. The autumn and winter precipitations over Southeast China were not strongly affected by the SST of previous months as a whole, while there is marked negative relationship between the summer precipitation and the previous summer SST, especially in North India and the South China Sea.