Statistical characteristics of precipitation extreme are computed and analyzed by using L-moment method in Huaihe river basin in this paper,which can provide theoretical basis for frequency estimates.The results indicate that the mean and deviation of annual maximum precipitation(AMP) range from 92.79 mm to 130.28 mm,and 0.193 to 0.266,respectively.The AMP distribution of each site is right skewness,that is to say,more than half of the AMP values are less than the average,with only a few greater than the average value which have bigger influence on the average.Compared with normal distribution,the distribution of AMP from each site are rush peak and thick tail.The spatial distribution of statistical parameters show that the high values mainly distributed in the southwest mountain areas and eastern hills,which means AMP in these regions are more and stronger than that in other regions.Statistical parameters of precipitation extreme can not only reflect the general average and annual fluctuations of annual AMP,also grasp the ends of the AMP distribution,especially tail end of precipitation extreme.So,analysis of precipitation extreme parameters can provide good guidance for flood control.