By using the deep layer sea temperature data in the cross section of 137°E in the Western Pacific from 34°N to 1°S, and 500 hPa monthly mean geopotential height charts, the distribution structure and annual variation of ihe sea temperature at deep layer were analysed. It was found that the relation is out of phase between the annual variation of sea temperature at the thermoclinic layer (taken4°-8°N,and 75-200m in depth in Equatorial Western Pacific) and the current amount of equatorial anti-current. During the periods of the El Nino years, the equatorial anti-currents (from east to west) were enhanced, while the temperature of the thermoclinic layer in Equatorial Warm Pool (EWP) were decreased. When the El Nino events ended, the current amount of the equatorial anti-current would decrease rapidly, meanwhile, the sea temperature of the thermoclinic layer increased. On this basis, the effects of sea temperature of thermoclinic layer of EWP on the low-latitude atmospheric general circulation were stu By using the deep layer sea temperature data in the cross section of 137 ° E in the Western Pacific from 34 ° N to 1 ° S, and 500 hPa monthly mean geopotential height charts, the distribution structure and annual variation of ihe sea temperature at deep It was found that the relation is out of phase between the annual variation of sea temperature at the thermoclinic layer (taken 4 ° -8 ° N, and 75-200m in depth in Equatorial Western Pacific) and the current amount of equatorial During the periods of the El Nino years, the equatorial anti-currents (from east to west) were enhanced, while the temperature of the thermocline layer in Equatorial Warm Pool (EWP) were decreased. When the El Nino events ended , the current amount of the equatorial anti-current would decrease rapidly, meanwhile, the sea temperature of the thermocline layer increased. On this basis, the effects of sea temperature of thermoclinic layer of EWP on the low-latitude atmospheric general ci rculation were stu