Abstract: By using the Southwest China Vortex Yearbook from 2012 to 2020, the temporal and spatial variation characteristics of Southwest China Vortex(SWCV) and the climatic characteristics such as vortex source, moving path and life history are statistically analyzed. Combined with the rainfall data of Chongqing, the impact of SWCV on rainstorm in Chongqing is analyzed.The results show that: (1) The SWCV is generated all year round with obvious annual, seasonal and monthly differences. It occurs the most from March to June, especially in June, and the least in July and August. The probability of generation in daytime and night is roughly the same, but the Sichuan Basin Vortex is mainly generated at night, while the Xiaojin Vortex is mainly generated during the day. (2) The Jiulong Vortex is the most in the SWCV, followed by the Sichuan Basin Vortex, and the Xiaojin Vortex is the least. Most of the SWCV will die out in the source after being generated. Among them, the Xiaojin Vortex is easier to move out of the generating area, and the removal rate of the Sichuan Basin Vortex is lower than that of the Jiulong Vortex and the Xiaojin Vortex. (3) The SWCV moves in four directions: northeast, east, southeast and southwest, mainly in the east direction, up to the northeast and East China. (4) More than 80% of the SWCV lasts less than 48 hours. With the increase of time, the maintenance frequency of the SWCV decreases significantly. The life history of individual SWCV can be more than 120 hours, up to 180 hours. (5) 76% of the regional rainstorms in Chongqing are related to the SWCV. The Sichuan Basin Vortex is the main cause of the regional rainstorm in Chongqing, especially in the districts and counties north of the Yangtze River in Chongqing.