Abstract: Based on the daily precipitation data of Jiangxi Province from 1961 to 2023, the spatial characteristics and temporal variation trend of precipitation resources during the safe growth period of double-cropping rice were analyzed. The main factors of precipitation intensity change were determined by path analysis method. The results show that:（1） During the safe growth period of double-cropping rice in Jiangxi from 1961 to 2023, the precipitation and precipitation intensity in most areas showed an increasing trend, with the largest increase in the northeast and central regions of Jiangxi.（2） Compared to 1961-1990, during the safe growth period of double-cropping rice in Jiangxi from 1991 to 2020, precipitation increased by 5.8%, precipitation days decreased by 1.0%, and precipitation intensity increased by 7.0%.（3） The influence of relative precipitation on the intensity of relative precipitation is much greater than that on relative precipitation days.