<p>Medium-low temperature geothermal resources are abundant in the Guanxian fault depression. An essential foundation for the eff ective development and use of geothermal resources is the study of the genetic model and resource assessment of the geothermal system. This study examines the geothermal geological circumstances, hydrochemical features, and geothermal field characteristics based on the regional geological structure and prior research findings. The appraisal of geothermal resources is done, and a conceptual model of the geothermal system in the research area is built. The findings indicate that the Guan xian fault depression's geothermal resources are primarily Guantao Formation sandstone heat reservoirs. The geothermal water at the wellhead has a temperature between 54°C and 60 °C, and its primary chemistry is Cl·SO₄-Na. Deep thermal conduction heats the geothermal water, which is then laterally supplied to the reservoir after being largely restored by air precipitation from the western Taihang Mountains. With an annual exploitable geothermal resource of 6,782×10¹² J, or 23.14×10⁴ tons of standard coal, the Guantao Formation sandstone reservoir in the Guanxian depression has a geothermal resource of about 620.10×10¹⁶ J. An area of 18 million m² can be heated by geothermal extraction per year, demonstrating the potential for geothermal resources and their high development and use value.</p>