The relationship between summer precipitation anomalies in the Huaihe Basin and SSTA over the North Pacific is researched in this paper. Possible mechanisms of the effects of SSTA over the North Pacific on summer precipitation anomalies in the Huaihe Basin are primarily discussed. The main results may be concluded as follows; (1) The key area of SSTA over the North Pacific locates in 162.5~177.5°W, 36.5~41.5°N in which the mean SSTA from the preceding August to October has the largest positive correlation with the summer precipitation in the Huaihe Basin. (2) By the use of the SVD analysis technique,it is found that summer precipitation anomalies in the Huaihe Basin correspond to a large scale SSTA distribution pattern over the North Pacific and the key SSTA area is just located in the center. (3) It is the circulation anomalies in the following summer induced by the large area SSTA distribution pattern over the North Pacific that result in the summer precipitation anomaly in the Huaihe Basin. It is also the inner cause of the good correlation between the precipitation and the SSTA.