In order to improve the ability to predict high temperature and drought in summer and autumn, this article analyzes the actual observation data from the CIMISS data center, NCEP/NCAR reanalysis data. Combined with the meteorological drought index (MCI), the characteristics of atmospheric circulation during the summer autumn drought in Jiangxi Province in 2022 were analyzed.The results showed that:?This high-temperature and drought process has been rare since 1961. Both high temperature and drought have the characteristics of long duration, wide range, and high intensity.The superposition and synergy of the two have refreshed multiple climate value records.The atmospheric circulation situation has the following characteristics:The trough ridge is stable in summer. The subtropical high pressure is abnormally strong and northward. At the same time, the water vapor in the Bay of Bengal shifts in the South China Sea and merges with the East Asian subtropical summer monsoon, entering further north, causing drought to occur and develop.In autumn, there is a weak negative height anomaly near Lake Baikal.The circulation in mid-high latitudes is straight.The meridional circulation is weaker than the same period of the year.Cold air is infrequent and less than the same period of the year.At the same time, the subtropical high system that is divided in parts of southern China and Jiangnan is stronger, preventing the intersection of cold and warm air in the upper air.The sinking of the upper airflow causes warming and drying.The lower layer is affected by the circulation of the continental anticyclone, the cyclonic circulation of the South China Sea and the northwest Pacific, resulting in reduced water vapor transport, which is not conducive to precipitation, causing drought to continue to intensify.In addition, the absence of typhoons from July to October is also one of the causes of the unusually high temperature and drought in Jiangxi.