Using the global monthly mean sea surface temperature(SST) data,the ONI(Oceanic Nino Index) series,and the monthly rainfall of 160 stations in China,El Nino events are classified in several ways,and the influences of all kinds of El Nino events on East Asia circulation and the monthly and seasonal precipitation in following summer in eastern China are investigated.Results indicate that:1)According to the regions of biggest positive SST anomaly during El Nino events,El Nino events are categorized into three patterns,namely,the Nino3,Nino4 and Nino3.4 patterns.2)In the following June of El Nino event year,the significant positive precipitation anomaly mainly locates in the Poyang Lake and Dongting Lake basins for the Nino3 pattern,the Poyang Lake basin,the junction of Guangxi,Guangdong and Hunan,and the western of Guangxi for the Nino4 pattern,and the Dongting Lake basin for the Nino3.4 pattern,respectively.From June to July,the positive precipitation anomaly moves northward into the Yangtze River basin for the Nino3 pattern.The precipitation anomaly shows reverse phase distribution from west(more) to east(less) in August.From June to August,the positive precipitation anomaly gradually moves northward for Nino4 pattern,while does from south to north then northeastward for Nino3.4 pattern.3)In the whole following summer,the significant positive precipitation anomaly of Nino3,Nino4 and Nino3.4 patterns distributes from south to north in eastern China.The positive precipitation anomaly is the strongest for Nino4 pattern and the weakest for Nino3.4 pattern,no matter in June,July,August or summer.4)The different types of El Nino events are corresponding to different circulation characteristics in the following June,July,August or summer.On the whole,the South Asia high becomes stronger and moves eastward and northward corresponding to the climatological field after the events of Nino3 and Nino4 patterns,and it is stronger for Nino3 than that for Nino4.After the event of Nino3.4 pattern,it is weaker and withdraw westward.The western Pacific subtropical high is stronger and moves westward and northward corresponding to the climatological field after the events of Nino3 and Nino4 patterns,and it is stronger moves more westward and northward for Nino3 than that for Nino4.After the event of Nino3.4 pattern,it retreats eastward and moves northward.