Based on the meteorological observations and the peach florescence at Guigang, Guangxi from 1983 to 2004, the relationship between the winter climatic characteristics and the peach florescence at Guigang, Guangxi is analyzed. It shows that when there is more rainfall in winter and lower air temperature in the last two dekad of December, higher air temperature from the last ten days of January to the last ten days of February, the peach florescence will be earlier than normal. A peach florescence forecast model is oestablished by the Fuzy mathmatics method.