Based on the summer precipitation data of 34 meteorological stations in Chongqing from 1961 to 2017 and NCEP/NCAR reanalysis data of monthly average height and SST, it is found that there is positive correlation between the tropical Indian Ocean dipole (TIOD) mode of the last autumn, especially November, and summer precipitation in Chongqing. The impact of SST on the atmospheric circulation is analyzed and shown below. 1) The correlation between TIOD of the last November and height field at 500 hPa in summer is consistent with that between the summer precipitation in Chongqing and height field, showing a distribution of "+, -, +" from high latitudes to low latitudes. When TIOD of the last November is in positive (negative) phase, the summer circulation in the next year is characterized by obvious (unobvious) Ural blocking high, active (inactive) lowvalue system in middle latitudes between 30°N and 37°N, stronger (weaker) western Pacific subtropical high, and more typical southward (northward) summer precipitation in Chongqing. 2) When the warm phase of ENSO in the equatorial Pacific occurs at the same time with the TIOD event previously, the two events overlap with each other, causing the western Pacific subtropical high to be intensified and stretch westward and southward and resulting in anomalously more summer precipitation in Chongqing.