Abstract: In order to better monitor and warn against severe weather such as hail and thunderstorm winds,using conventional weather maps,automatic weather stations,and radar mosaics,the weather process of the large-scale thunderstorm echoes in Zhangshu and Fengcheng in Jiangxi on May10,2021 was analyzed by using principles of meteorology and radar meteorology.The results show that in the thunderstorm echo cluster,super cells produce large hailstones accompanied by thunderstorm gale,and there is no short-term heavy rainfall.When the humidity crest reaches ≥40%/100 km and the temperature front reaches ≥10 ℃/100 km,it can trigger the formation of convective echoes.When the convective echo system moves near the temperature and humidity front,it will quickly develop and intensify,the combination reflectivity intensity of the super cell can reach 65 to 70 dBZ,and the 60dBZ echo area will rapidly expand.The storm tracking information could indicate the movement direction and speed of the super cell echoes well.When multiple storm tracking informations point to the same direction,the credibility is higher.These research results provide a basis for forecasting and warning of hail weather in the situation of Jiangxi thunderstorm echo cluster.