Abstract: Based on the hourly precipitation data in may to October of PanZhiHua from 1988 to 2010,the spatial and temporal distribution characteristics of the strong precipitation at all levels and durations are analyzed.Using the Pearson-Ⅲ type frequency distribution function,the paper calculated the extreme maximum precipitation in the return period in 1 hours,3 hours and 6 hours of all four station.The results show that strong precipitation at all levels which have significant daily variation characteristics are mainly concentrated in June,September and July for the most,and they most easy to appear at 00 to 05.The biggest precipitation in 1 hours,3 hours and 6 hours all appear in Yanbian station,Yanbian and Panzhihua station are more likely to appear extreme strong precipitation with 1 hour rainfall≥50 mm.Short-term strong precipitation process has significant local characteristic,single station process reaches as high as 80%,and the raininess is stronger always companying with more significant local characteristic.The Yanbian station has the biggest extreme maximum precipitation in all durations and return periods.