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Based on the daily precipitation data of 438 stations from 1961 to 2014 in the eastern China, we calculate 4 indexes of extreme precipitation (RX1day, RX5day, CWD, SDII) defined by WMO (World Meteorological Organization), and analyze the spatial and temporal characteristics of extreme precipitation events in summer by using the areaweighted method. The results show that there were linear trends in the indexes of extreme precipitation and all indexes of extreme precipitation increased in south of the Yellow River and decreased in North China, except CWD. The indexes of extreme precipitation in summer show that RX1day, RX5day and SDII present a positive trend, and CWD shows a decreasing trend with time.