The teleconnectlon between the rainfall amount over Dongting lake plain of Hunan associated SST over equatorial eastern pacific and the chronology of ELNino events are examined, and the authol found that, the SST in winter was obviously associated with the following flood season rainfall during 1951-1988, and the teleconnectlon was steady during 1911-1988.In addition, the monthly mean rainfall departure composite distribution trend would be inverse of 20 ELNino events and 14 anti-ELNino events including the same year and the following year during 1911-1988, the transform is from August to September at the same year.