Studying the temporal and spatial changes of rainfall erosivity (RE) and erosivity density (ED) in Chongqing is conducive to soil erosion control and soil erosion risk assessment. Using the daily rainfall data and TM remote sensing image data of 34 meteorological stations in Chongqing from 1961 to 2020, the daily rainfall erosion force model, Mann-Kendall nonparametric test, coefficient of variation, Kriging interpolation, superposition analysis and other methods were used to analyze RE and ED. The spatial and temporal analysis of soil erosion intensity in Chongqing was carried out. The results showed that: (1) Chongqing’s annual average rainfall erosivity was 5 672.32 (MJ·mm)/(hm²·h·a), the annual average erosive force density was 4.94 MJ/(hm²·h·a), and the variation trend of average rainfall erosivity and erosivity density in each season were basically the same. (2) The annual RE and ED were the largest in northeast Chongqing, the second in southeast Chongqing, and the smallest in western Chongqing. Seasonal rainfall erosivity and erosivity density were concentrated in summer, and the rainfall erosivity was the highest in northeast Chongqing, and the erosivity density was highest in eastern Chongqing. (3) The soil erosion intensity in Chongqing in 2020 was dominated by slight erosion, followed by mild, moderate, intensity, extreme intensity and severe erosion. (4) The spatial distribution of the erosion risk level of rainfall erosivity and erosivity density was similar to the spatial distribution of soil erosion intensity level, and the highest values were both in northeast and southeast Chongqing. The research results could help managers to formulate soil and water conservation measures to effectively prevent and control soil erosion in Chongqing.