Abstract: Objective To clarify the fault tectonic characteristics of the Yinchuan Basin and evaluate the exploration potential of regional geothermal resources. Methods Taking gravity and magnetic data as the core, the reduction to pole (RTP) technique was applied to process magnetic data, and the moving average method was used to separate gravity and magnetic anomalies. The fault pattern was constructed based on geophysical data, structural boundaries were identified by combining multiple edge detection methods, and seismic and magnetotelluric(MT) profiles were integrated to conduct an in-depth analysis of fault characteristics and geothermal resource elements. Results The gravity and magnetic anomalies in the study area present a pattern of "surrounded by high values on all sides with a central depression". Four major faults develop from west to east, and verified by seismic and MT profiles, the deep-seated characteristics of the faults are highly consistent with the tectonic boundaries indicated by gravity and magnetic anomalies, which jointly dominate the tectonic evolution. Two types of favorable geothermal exploration areas controlled by faults were delineated: Class Ⅰ high potential development zones correspond to closed low value centers of gravity anomalies, and Class Ⅱ medium potential development zones correspond to broad and gentle low value gravity anomaly zones. Conclusions This study reveals the relationship between fault structures and gravity-magnetic anomalies in the Yinchuan Basin. Seismic and MT profiles refine the deep fault characteristics, providing an important reference for geological research and geothermal resource development in this region.