Abstract: With the support of Northwest weather modification project, CMA, observational experiments of local thermal convective clouds were conducted in Sanjiangyuan Region in August and September 2019. Based on on-board X-band dual polarization doppler radar volume-scan data, this paper mainly makes analysis of macroscopic and microscopic characteristics of thermal convective clouds occurred on one day, and makes comparison in point-to-point between satellite observation and radar echoes of thermal convective clouds. The results show that: experimental area had requirements for formation of local thermal convective clouds; movement of thermal convective clouds was from northwest to southeast, whose direction formed a 90°or 150°with topography (clockwise direction) and accorded with wind fields of 500 hPa, and most speed of movement was more than 35 km/h; radar echoes of thermal convective clouds were weak (with 30 to 48 dBz of maximal radar echo reflectivity), which maximal echo top varied from 4 to 5 km; thermal convective clouds were formed by cold cloud mechanism, with less vertical integrated liquid water contents and shorter duration; thermal convective cloud within a typical example was mainly affected by dynamic lifting, and its types of hydrometeor higher than 0°layer consisted of ice crystal, supercooled liquid water and graupel or small hail in developing and mature stages; comparing retrieval Re from FY-4A satellite observation with radar echoes of thermal convective clouds, the two were in good consistency.