Influence of the early SST anomaly on the summer precipitation distribution in Shandong was discussed and possible precursor for prediction was concluded, and verified by actual condition of 2016. It is easy to cause the first EOF mode when ENSO is in the stage of development before summer, and the second mode when ENSO is in the state of decay. The summer precipitation is highly correlated with the Pacific decadal oscillation and Indian Ocean basinwide warming phase in the southeast and the peninsula of Shandong Province. Meanwhile, high impact area of Southern Indian Ocean dipole and tropical Indian Ocean dipole phase is located in the northwest of Shandong Province. These SST anomalies have certain indicative significance to the summer precipitation prediction in Shandong.