1. College of Geo?exploration Science and Technology, Jilin University, Changchun 130026, China; 

 The Hepu Basin in Guangxi is a Mesozoic??Cenozoic fault basin, located in the intersection of the southern South China quasi?terranean platform (Beibu gulf depression), the Qinzhou remnant trough and the Yun? kai terrane, whose geothermal resources are rich. In order to study the tectonic evolution of the basin and the development value of the Qingshui hot spring in Shiwan Town, the authors applied the regularized density inversion method to obtain 5 profile density maps using the inversion of the measured Bouguer gravity anomalies and further divide the basement and major fracture zones. Using the Parker??Oldenburg interface inversion method, the base? ment, Moho and Curie depths within the basin were obtained using satellite gravity and magnetization data inver? sion. The Qingshui hot spring is located at the intersection of two major active fracture zones, with shallow Moho and Curie depths, high reservoir porosity and permeability, and good coverage trapping effect, has greater develop? ment value of geothermal resources.