Abstract: This paper focused on five factors (effective irrigation,saving water irrigation,agricultural water rates,forest coverage, average yearly rainfall) which influenced drought in Yunnan Province and basingthe statistics data of those five factors from 2003 to 2008, carried on factor analysis. The research indicated the factors that influence drought in YunnanProvince could be induced rate of cultivated land under irrigation,the state of land vegetation and climate conditions. On the basis of the researchconclusion and the condition of drought in Yunnan Province, the authors put forward some tactics and suggestions that could be used to solve drought inYunnan Province.