Using Kuo-Qian p-σ incorporated coordinate five layer primitive equation medel,investigation is undertaken of the influence of low-frequency convective heating sources over the Sotith-China Sea to Philippines on East Asian atmospheric circtilation. Results show that with the low frequency sources at heating(cooling)phase the west wind becomes strengthened(weakened)in the Atistralian upper troposphere and so does the 120°E cross equatorial flow in the lower troposphere,with the subtropical high positioned slightly northward(southward)of its mean,a situation that allows the low-level SE(SW)wind to exert effects on rainfall over the scaboard of eastern China.