With the data of the summer precipitation of torrential rain at 59 stations in east China,the North Pacific SST from 1951 to 1998 and the method of Singular Value Decomposition (SVD),this work analyzes season by season the teleconnection of summer extreme precipitation in east China with North Pacific SST and Southern Oscillation Index (I_SO),so as to examine the North Pacific SST key area and seasons (or months) of I_SO which are significantly correlated with the spatial distribution of extreme precipitation of East China.Results show that the spatial distribution of summer extreme precipitation in East China is significantly correlated with the same season SST in the sea area of 130~170°E,5~25°N;while the Nino area SST is distincively correlated with the next summer extreme precipitation in East China.The spring SST in the Black Current area and California current area is negatively correlated with summer extreme precipitation in East China.The winter SST in the equatorial East Pacific and Black Current area is positively teleconnected with the summer extreme precipitation in East China and in the Hetao area.The summer extreme precipitation in East China is negatively correlated with the previous autumn SST in the Nino area,while positively with that in the Western Pacific.