Drought is one of the major natural hazards in Changji areas.By using the method of Z-index and precipitation data of 37 years(from 1971 to 2007)of 8 representative meteorological stations in Changji areas,this paper studies the change of the drought and flood tendency and the distribution characteristics.The results indicate that the precipitation and characteristics of drought and flood in Changji areas is consistent,and the tendency is changing from drought to flood after mid-1970s,which is most significant in west and least significant in east.Frequency of drought in Changji areas is higher than that of flood,and frequency of drought is higher in west than in east,while frequency of flood is lower in west than in east.