The individual influence of "pure" ENSO or "pure" Indian Ocean Dipole(IOD)events,and the combined influence of the two types of events on both the summertime rainfall and temperature in China have been investigated using the NCEP-NCAR reanalysis data in 1958-1999.Results show that either the "pure" ENSO or "pure" IOD event has distinct effects on both the summertime precipitation and temperature in China.When a positive(negative)IOD event occurs during an El Nino(La Nina)year,summer moisture content and precipitation tend to increase(decrease)in the northern part of China,however,in the eastern part of China,the rainfall tends to be less(more)than normal while the temperature over China mainland tends to be higher(lower)than normal.The IOD has been proved henceforth to weaken the influences of ENSO events on the summertime rainfall and temperature in the eastern part of China.