The Hunan-Jiangxi border area is a complex tectonic domain with multiple orogeny and tectonic superposition.Meanwhile,it is also the main producing area of nonferrous metal deposits,polymetallic deposits and uranium deposits in southern China.Due to the influence and restriction of many factors,the study of geological structure is very insufficient.Combining the regional gravity data with the latest high-precision airborne geophysical(magnetic/gamma)data,the authors systematically investigated the geological structure of this area,probed into the distribution characteristics of deep faults and their relationship with magmatic rocks,and described distribution condition and geophysical characteristics of the Qinzhou-Hangzhou junction area.The results have a strong reference value for the further development of basic geological research and mineral resource prediction in this area.