By using typhoon data of China Meterological Administration during 1949- 2007,data of China's continental and marine meteorological stations,meteorological data of civil airports with high density and continuity,through climate statistical method and key cases analysis,interaction between typhoon and its contiguous air mass in China coastal areas in autumn was analyzed from aspects of climatic and synoptic.The results showed that the occurrence frequency of strong typhoon and super strong typhoon is more in...