An analysis was made of the Doppler radar products and the thunder-lighting parameters of a severe convective weather event occurred on 12 April 2003 over the central and the northern Jiangxi Province. Results show that the thunder-lightning parameters are more sensitive to the strong convection weather. The movement of the thunder-lightning zone corresponds with the moving track of the strong convective cell. The thunder-lightning frequency change indicates the different development phases of the severe convective weather event. The type of convection can be identified through thunder-lightning polarity change. Therefore, the thunder-lightning parameters can be used in weather forecasting in combination with radar echo data and satellite cloud pictures.