Abstract: The influence of sea surface temperature sustained heating in the North Pacific on flood season rainfall in China is discussed by the departure accumulation of the sea surface temperature. The results indicate that there is better relationship between the departure accumulation of the index STPNA(PNA teleconnection pattern of the North Pacific SST)and flood season rainfall in china. The departure accumulations of the index STPNA influence on the general circulation of 500hPa in the northern hemisphere is further discussed.