Based on the daily precipitation dataset at the 25 stations in Guangdong Province for the period of 1961-2010, we studied the temporal-spatial characteristics and the periodicity of the extreme priciptation events in Guangdong, and explored the causes hehind the charateristics from the view of moisture convergence. The results indiate that the total amount, frequency and intensity of extreme precipitation greatly vary with region across Guangdong Province. The total amount and the intensity increase from north to south,while the frequency decreases. The total amount and the intensity of extreme precipitation show an incresing trend in most areas and the increasing rates are different among different regions. The extreme precipitation in Guangdong Province may be affected by the large-scale weather systems, which is verified by the fact that the extreme precipitation shows more or less over the whole province. However, there are differences in extreme precipitation between eastern and western regions, between the center and the surrounding regions, and between the northern and southern regions. The abnormal area for extreme precipitation can be divided into four subregions (abnormal type) : Northeastern area, western area, central area and eastern coastal area. The extreme precipitation in each sub-region has similar periodic fluctuations of 20 years,10 years and 3-4 years, but the differences still exist. The extreme moisture convergence agrees well with extreme precipitation spatially and temporally, thus, moisture convergence could be used as a predictor of extreme precipitation in Guangdong Province.