The interannual and interdecadal variation of sea surface temperature (SST) in the east equatorial Pacific(EEP) from 1854 to 1990 is investigated in terms of the method of running t-test. The results indicate that the SST of east equatorial Pacific shows three sudden increasings respectively in the end of the last century, 1920s and 1950s. Based on the caeculation of running coherence coefficients, one can find that the relationship between the SST in EEP and the counterpart in the other areas over the global ocean shows strongly indecadal variations and the change of SST in EEP is synchronous with the global warming.