The sensitivity of the global atmospheric and oceanic response to sea surface temperature anomaly(SSTA) throughou the South China Sea(SCS) is investigated using the Fast Ocean-Atmosphere Model(FOAM). Forced by a warming SST, the ex periment explicitly demonstrates that the responses of surface air temperature(SAT) and SST exhibit positive anomalous center ove SCS and negative anomalous center over the Northern Pacific Ocean(NPO). The atmospheric response to the warm SST anomalie is characterized by a barotropical anomaly in middle-latitude, leading to a weak subtropical high in summer and a weak Aleutian low in winter. Accordingly, Indian monsoon and eastern Asian monsoon strengthen in summer but weaken in winter as a result of wind convergence owing to the warm SST. It is worth noting that the abnormal signals propagate poleward and eastward away in the form of Rossby Waves from the forcing region, which induces high pressure anomaly. Owing to action of the wind-driven circulation, an anomalous anti-cyclonic circulation is induced with a primary southward current in the upper ocean. An obvious cooling appear over the North Pacific, which can be explained by anomalous meridional cold advection and mixing as shown in the analysises o heat budget and other factors that affect SST. The sensitivity of the global atmospheric and oceanic response to sea surface temperature anomaly (SSTA) through the the South China Sea (SCS) is investigated using the Fast Ocean-Atmosphere Model (FOAM). Forced by a warming SST, the ex periment explicitly demonstrates that the responses of surface air temperature (SAT) and SST exhibit positive anomalous center ove SCS and negative anomalous center over the Northern Pacific Ocean (NPO). The atmospheric response to the warm SST anomalie is characterized by a barotropical anomaly in middle-latitude, leading to a weak subtropical high in summer and a weak Aleutian low in winter. It, Indian monsoon and eastern Asian monsoon strengthen in summer but weaken in winter as a result of wind convergence due to the warm SST. It is worth noting that the abnormal signals propagate poleward and eastward away in the form of Rossby Waves from the forcing region, which induces high pressure anomaly. Owing to action of the wind-driven circulation, an An obvious cooling appear over the North Pacific, which can be explained by anomalous meridional cold advection and mixing as shown in the analysises o heat budget and other factors that affect SST.