Abstract: Non-precipitation echo from radar such as ground objects echo and super refraction and so on are important to explore quantitatively precipitation and the other products. The three-dimensional structure features of precipitation and non-precipitation reflectivity could be used to control the radar data’s quality. The radar volume-scanning data in Hefei, Guangzhou, Puyang and Yantai were analyzed. The results show that there are different distribution characteristics on low value zone and high value zone between horizontal reflectivity structure (T) and the vertical reflectivity difference value (V) of precipitation and non-precipitation. Thus, the different discriminant indices of the low value zone and the high value zone are set for them. The experiment indicates that this method could improve the recognition effect of precipitation and non-precipitation echoes.