Based on fall-winter depth of snow and days of snow lying at 17 stations in the eastern part of the Tibetan Plateau from 1957 to 1988,the different distribution characteristics of the average geopotential height at 500hPa level in summer were respectively analyzed when the depth of snow and days of snow lying were anomalous.The distribution characteristics of the average geopotential height at 500hPa level when the tropical cyclones affected Fujian more or less was compared.The two distribution characteristics were similar.The result indicates that the frequency of tropical cyclones affecting Fujian will be increased(decreased)when the fall winter depth of snow is more(less),when the fall winter days of snow lying is more,the frequency of tropical cyclones will be decreased.