Weather features contribute substantially to precipitation, while the physical mechanisms underlying these impacts remain unclear. Based on ERA5 reanalysis data and the Global Atmospheric Rivers Database, this paper analyzes the atmospheric circulation, water vapor transport and precipitation categories of the “23·7” heavy rainfall event by utilizing objective detection and precipitation attribution methods. The contributions of cyclones, fronts, atmospheric rivers and their combinations to precipitation are quantified. The results show that Typhoon Doksuri, Typhoon Khanun and the high-pressure barrier provide abundant water vapor to North China and unstable atmospheric conditions are favorable to convection. In the early stage, precipitation in North China is mainly influenced by cyclones and atmospheric rivers due to the stagnation of Typhoon Doksuri residual vortex. In the late stage, precipitation is primarily associated with fronts and atmospheric rivers. The contributions of atmospheric rivers combined with fronts and fronts only to heavy rainfall in the Beijing-Tianjin-Hebei region are 43.2% and 36.0%, respectively.