[Objective] The temporal and spatial variation characteristics of rainfall erosivity in mountainous areas of Hebei Province were studied in order to provide a scientific basis for the formulation and implementation of soil erosion control measures in this area.[Methods] The rainfall erosivity in mountainous areas of Hebei Province from 2000 to 2018 was analyzed by using temporal variation analysis and spatial distribution analysis.[Results] At the temporal scale, the annual rainfall erosivity of Yanshan Mountain showed a fluctuating upward trend, with a main period of 11 years, and a sudden change occurred in 2009. The spring and autumn showed a fluctuating downward trend. The main periods were 8 and 11 years, respectively. Abrupt changes occurred in the autumn in 2001, and the summer showed an upward trend of fluctuations. The main cycle was 9 years, and the sudden change occurred in 2010. The annual rainfall erosivity of the Taihang Mountains showed a fluctuating downward trend, with the main cycle of being 6 years and no sudden changes. The summer and autumn showed a fluctuating upward trend, the main periods were 8 and 10 years, respectively, and there were no mutation points. The spring showed a downward trend of fluctuations, the main period was 8 years, and a sudden change occurred in 2006. At the spatial scale, the average annual rainfall erosivity range was 1 063.39~5 127.44 MJ·mm/(hm²·h). Average annual and summer rainfall erosivity increased first, then decreased, then increased from west to east in the Yanshan Mountain area, and gradually decreased from south to north in the Taihang Mountain area. The distribution of rainfall erosivity in the two seasons was relatively variable.[Conclusion] Through the analysis of rainfall erosivity in mountainous areas of Hebei Province, it is concluded that summer soil erosion is the most serious, especially in some areas of Yanshan mountainous area.