The spatiotemporal distribution characteristics of different duration precipitations in Guangdong province were analyzed based on the hourly rain-gauge data from Guangdong's 86 National Weather Stations for period of 2001-2018.Results show that the accumulated precipitation would probably rise with the increase of averaged annual precipitation hours in most area of Guangdong,except in northern mountainous area.Annual hourly precipitation intensities show a decreasing trend from the southern coastal area to the northern inland area.Short duration precipitation is the main precipitation type in flood seasons,accounting for 65.3% of the annual precipitation events.While long duration precipitation contributes more (56.7%) to the annual accumulated precipitation.In the pre-flood seasons,short/moderate/long duration precipitations mostly occur in west/both sides of the Pearl River Delta and northwest/east and north of Guangdong,respectively.While in the post-flood season,short duration precipitation mostly occurs in Guangdong's inland area,with frequencies decreasing from northwest to southeast;moderate duration precipitation is unevenly distributed,and long duration precipitation mostly occurs in coastal area.In flood seasons,a two-peak pattern presents in diurnal variation of precipitation hours,and a single peak pattern inhabits in the diurnal variation of hourly precipitation intensity.The peak values of hourly precipitation intensities tend to occur in afternoon in inland area,or in time after midnight till next morning in areas along coast,some mountainous areas and the Pearl River Delta.