Based on the synthetical analysis of lightning data and Doppler radar echoes from a severe storm event in Henan Province on 19 June 2003, relationship is found between lightning frequency and radar echo intensity. In the different phases of the radar echo variation, lightning location is sometimes consistent with the position of strong radar echo, and at some other times away from the position of strong radar echo; sometimes even no lightning occurs. Through analyzing velocity echo data, it can be seen that under the adverse lower-level wind field, precipitation radar echoes dissipated gradually while moving toward the station, and at the same time the lightning frequency decreased gradually.