Based on the monthly precipitation data of 160 meteorological observation stations in China,the 74 circulation indexes,HadISST monthly mean sea surface temperature data and NCEP/NCAR monthly mean reanalysis data,this paper compared and analyzed the differences of summer rainfall in eastern China and related atmospheric circulation in the decaying stage of two types of ENSO events,and discussed the possible mechanisms.The results are as follows:(1) In the following summer of EP type of El Niño (La Niña) events,precipitation in eastern China presents a three-pole-type of "+-+" ("-+-") inverse distribution from north to south,while precipitation during the following summer of CP type of El Niño(La Niña) events in eastern China presents a dipole-type of "+-" ("+-") inverse distribution from north to south.(2) The western Pacific subtropical high (WPSH) and the South Asia high (SAH) in the following summer of El Niño events are much stronger than the climatological normal.WPSH (SAH) of EP El Niño moves further westward (eastward).The area of WPSH of CP El Niño is larger than that of EP El Niño,and the intensity is stronger as well.During the following summer of La Niña events,WPSH and SAH of CP La Niña are stronger than those of EP La Niña but weaker than the climatological normal.(3) An anomalous anticyclone exists in the northwestern Pacific during El Niño events.The anticyclone of EP El Niño is southward and stronger,and lasts longer than that of CP El Niño,while the anticyclone of CP El Niño is northward and has larger range.However,during La Niña events,an anomalous cyclone exists in the northwestern Pacific region to southeastern China.The anomalous cyclone of CP La Niña is much stronger,with the area much larger than that of EP La Niña.(4) The difference of northwestern Pacific anomalous anticyclone between the two types of El Niño events may be related to the warming of the Indian Ocean Basin and the persistent abnormal cooling of SST in the Pacific Ocean.The difference of northwestern Pacific anomalous cyclone between two types of La Niña events may be related to the persistent abnormal warming of SST in tropical western Pacific Ocean.