The Xiuning basin has good geological conditions for geothermal resources,exploitation of which is of great significance to the high-quality development in southern Anhui and adds to the efforts toward national"double-carbon"goal.Through analysis of the data on remote sensing interpretation,field geothermal geological survey,geophysical exploration,analysis and testing,and dynamic monitoring of groundwater in the area,the geothermal resources have been initially identified for their geological conditions,occurrences and reservoir characteristics,with their reserves being estimated.The reservoirs are mainly banded and the heat is sourced from the heat convection in the deep and large fault zone and the heat flow conduction in the deep crust.The deep and large faults and the secondary ones constitute a structural system for heat and water conduction in the basin area.