Based on the three dimensional lightning location systerm, Doppler weather radar data and radiosonde data in Guizhou, analyzed the correlation between lightning characteristics and radar echo characteristics in a strong weather process in Guizhou. The results show that the correlation between the top layer of ech and lightning frequency is better than that between echo intensity and lightning frequency; The echo area that greater than or equal to 30dBz tends better correlation with total lightning frequency and negative lightning frequency in different temperature layer , in the zero layer, correlation between echo area greater than or equal to the 30dBz and total lightning frequency is thebest,well, polynomial fitting is better than the linear fitting;The maximum echo intensity, echo top height, the development height of 30dBz is an indicator of the occurrence of lightning.