Abstract:Abstract: using conventional weather charts, satellite images, etc., mathematical statistics and physical analysis methods as well, 144 processes of severe convection in Jiangxi from1989 to 2010 and 17 processes of typical severe convection from1998 to 2010 were analyzed, the results showed that: ①Severe convection in Jiangxi has been increasing year after year, April be most probable to severe convection, it’s not happen in December and January, 8-9 o'clock and 15-16 o'clock was most probable to severe convection every day and followed by 11-14 o'clock,it’s impossible to become large-scale in 18-19 o'clock and 21-23 o'clock. ②Severe convection mainly occurs in central jiang xi, and less in southern part than other regions. ③Strong wind and precipitation mainly occurs when the severe convection processes happening. ④southern Asia high and upper-level jet stream(200hPa), subtropical high and conditioning tank(500hPa),shear and low vortex (700hPa and 850hPa), southwest jet stream (700hPa and 850hPa) and surface quasi-stationary front are the major weather systems giving rise to severe convection in Jiangxi.⑤There are two major conceptual models for severe convection in Jiangxi, namely, MCC (MCS) and the barocline banded cloud (the hackneyed barocline banded cloud and the band wave cloud).