Aiming at such complexity and uncertainty problems as the influence of equatorial sea surface temperature(SST) on West Pacific subtropical high,by introducing the fuzzy mapping idea and ANFIS(Adaptive-Netwook-Based Fuzzy Inference System) technique,the response trend and degree of West Pacific subtropical high intensity to the thermal pattern and shift of SST in equatorial eastern Pacific,western Pacific,and equatorial Indian ocean are analysed and discussed.Results show that the enhancing(weakening) response of subtropical high is corresponding to the SST cooling(warming) in equatorial eastern Pacific,and the response amplitude weakens(enhances) with time.The weakening(enhancing) response of subtropical high is corresponding to the SST cooling(warming) in equatorial Indian ocean,and the response amplitude is far less than that to the SST in equatorial eastern Pacific.The different response trends of subtropical high are corresponding to the different pace warming in equatorial western Pacific,viz.the rapid(slow) warming of SST in western Pacific is suitable for the weakening(enhancing) of subtropical high,and the delayed enhancing response is corresponding to the SST cooling in equatorial western Pacific.Some new viewpoints are introduced as follows:the SST shift range and rate are the key impact factors of subtropical high aberrance,and their influences are more notable than those of basic thermal status of equatorial SST.