Based on 1959—2000 daily precipitation data of 76 stations in the Changjiang-Huaihe area of China,the Changjiang-Huaihe area is divided into four regions with different spatial features of rainfall in Mei-yu period by use of REOF decomposition.The interseasonal,interannual and interdecadal variations and the period,trend characteristics of four regions’extreme precipitation above storm rainfall are examined.Results show that all the four regions’maximum extreme precipitation are found in the period,their extreme rainfalls in the period show upward trends and have different interannual and interdecadal variations.The storm rainfall in the period and its days of southwest region has a significant upward catastrophe in the 1990’s.The extreme precipitation of four regions have different periodic variations with kinds of time scales.