Abstract: Regarding the mobility of the Southwest China Vortex (SWV) and its associated rainstorm areas, this study selected 25 SWV rainstorms affecting Chongqing from 2019 to 2023. The dynamic compositing method, which tracks the movement of the SWV center, was employed to analyze the dynamic distribution and its cause of heavy rainfall relative to the SWV center. The conclusions are as follows: SWV rainstorms can be categorized into three types: southeastern type, eastern type, and multi-quadrant type. The distribution of heavy rainfall associated with various types of the SWV is closely related to the position of the upper-level jet, the intensity and meridional extent of the trough, the exit region of low-level jets, and the distribution of warm and cold temperature advection, while the thermodynamic and dynamic characteristics exhibit distinct similarities and differences. The southeastern type is influenced by the short-lived SWV with weaker upward motion, shallow vertical development and a pronounced northwestward tilt. The eastern type involves the long-lasting and intense? SWV which displays deeper vertical development and a low-level northwestward tilt. The multi-quadrant type is influenced by the SWV with sustained intrusion of cold air from the rear and strong uplift movement, characterized by symmetric winds in the front and rear, pronounced cold and warm air convergence, the deepest vertical development and a low-level northward tilt.