Abstract: Based on the cross correlation matrices between the arctic sea ice extent and the sea surface temperature (SST)in the equatorial eastern pacific,the interaction between the sea ice and SST,and its spatial-temporal features are discussed in this paper. The relations between the arctic sea ice and E1 Nino are also analyzed. The results show that the sea ice extent at Arctic subregionsⅤ-Ⅵ in winter can influence the equatorial eastern Pacific SST in the followLng seasons,but the sea ice conditions at subregion Ⅶ in summer and autumn have influence on SST in the next summer and autumn.The influence of the equatorial eastern Pacific SST in previous seasons on the sea ice extent at Arctic subregionⅠin spring is aiso true. The anomalies of Arctic sea ice extent in previous seasons are significant to foresee the occurrence of E1 Nino. The procese in which the influence of arctic sea ice in winter has on the equatorial eastern Pacific SST probably relates to polar vortex, outbreak and southward invasion of polar cold air mass in eastern Asia while that in which the equatorial eastern Pacific SST has influence on the Arctic sea ice in spririg may relate to the PNA pattern in atmospheric circulation.