Abstract: To reveal the spatio-temporal distribution characteristics and disaster risk differences of heavy precipitation in the Baihetan Hydropower Station dam area, based on the hourly precipitation data of Xintian Station from 2012 to 2022, Mabozi Station from 2014 to 2022, Huangtian Water Plant Station from 2015 to 2022, and Shangcunliangzi Station from 2017 to 2020, a comprehensive analysis was conducted on the spatio-temporal distribution characteristics of short-term heavy precipitation, rainstorms and extreme precipitation events in the dam area from the aspects of precipitation amount, precipitation intensity, frequency and contribution rate. The results indicated the precipitation during the flood season in the Baihetan Dam area showed significant spatial heterogeneity. The station with the highest total precipitation was Mabozi Station, while the one with the lowest was Shangcunliangzi Station. The short-term heavy rainfall at various stations in the dam area reached its peak in July, mostly occurring at night. The rainfall reached its maximum value in the late night, while the precipitation intensity was relatively high in the evening and before midnight. Heavy rainfall in the dam area occurred most frequently in September, and the precipitation reached its peak in the late night. It lagged about 2 hours behind the occurrence time of short-term heavy precipitation. In terms of extreme precipitation, the hourly and daily percentile extreme precipitation thresholds at Shangcunliangzi Station were relatively low, with higher standard intensity and contribution rate. While at Mabozi Station, the hourly precipitation intensity and contribution rate were relatively low, but the daily precipitation threshold and intensity were both relatively high.