Abstract: By using the ratio of disaster-affected area,the ratio of disaster-suffering area,precipitation variability,fragile degrees,calamity loss rate,the temporal and spatial distributional characteristics of the agricultural risk of flood in Hunan province were evaluated.The results showed that the flood region had transferred from south to north in Hunan,and risk probability had a serious tendency.Based on temporal and spatial distribution characteristics of the agricultural risk degree of flood,some measures of disaster prevention and mitigation were proposed to provide a reference to avoiding or abating the influence of flood.

Key words: Flood disaster, Risk, Hunan