This study of the teleconnections between South China Sea SST and equatorial eastern Pacific were studied by using the canonical correlation analysis showed that the relationships were closest when South China SST lagged equatorial eastern Pacific SST by twelve months. As a result of the South China Sea SST’s response to the El Nino events. The coefficients of the canonical correlation variation between the SST of the two sea regions were studied by using cross-spectrum analysis. The results showed that the two regions have period of about quasi-2 years, 3-4 years and 16.7 years.