Abstract:Pearson-Ⅲ distribution,Lognormal distribution,Exponential distribution,and Gumbel-Ⅰ distribution are used to fit precipitation extreme of short period (5min,10min,15min,20min,30min,45min,60min,90min,120min) from 1959 to 2000 in Guangzhou. The fitness is checked up by Kolmogorov test. The results show that short-period precipitation extreme of Guangzhou is subject to the Pearson-Ⅲ distribution.