In this paper, the radar echo characteristics of two warm-area torrential rain events on May 31 and June 8, 2020 in southeastern Guizhou are analyzed by using the data of Rongjiang dual-polarization Doppler weather radar, conventional observation and encrypted automatic station observation in southeastern Guizhou. The results show that: (1) The radar echo of the rainstorm in the warm area of the moon mountain is mainly the echo of cumulus clouds, and the terrain has an obvious forcible uplifting effect on the echo; (2) The evolution of the echo is mainly divided into three stages , The "merger enhancement" of convective echoes, and the long-term "train effect" formed by the backward propagation of the single body, which caused the rainstorm process in the moon mountain area; (3) The radial velocity field often cooperates with the headwind area and the γ-medium-scale cyclone; the echo top height and the vertical integral liquid water content are accompanied by a jump phenomenon; (4) The warm area rainstorm is caused by the combined effect of low-centroid + high-centroid echo, and the vigorously developing monomers produce and dissipate faster, and have significant convective characteristics; (5) As the height of the center of mass, the maximum vertical liquid water content and the maximum echo intensity increase, the rain intensity will also increase, but there is a certain lag relationship between the three and the change of rain intensity; (6) The precipitation above torrential rain is dominated by heavy raindrops, the rainfall intensity is strong, and the concentration of raindrops is large; (7) The evolution of 1h cumulative rainfall, 3h cumulative rainfall and total rainstorm precipitation products estimated by radar are consistent with the actual rainfall observed by the corresponding automatic station, but there is a certain deviation from the actual situation, and with the increase of rainfall intensity , the error will also increase; the two products of 3h cumulative rainfall and total rainstorm rainfall can better reflect the heavy rainfall area.