Abstract: The Dabie Mountain area in Anhui is located in the eastern part of the collision orogenic belt between the Yangtze Plate and China-Korea continental Plate.The southeast side is bounded by the Chi-Tai fault, the northwest side ends by the Jinzhai deep fault, and east side to East Tangchi in the Lujiang.Five hot springs in the Dabie Mountain area including the Tangwan hot spring(AH2)in Tangquan Township of Taihu County, Wenquan Town hot spring(AH6)in Yuexi County, Xifei hot spring(AH7)in Changpu Town of Yuexi County, East Tangchi hot spring(AH11)in Lujiang County and West Tangchi hot spring(AH12)in Shucheng County are investigated.Deep and large faults and small parallel or oblique faults control the occurrence of the hot springs in the study area, and underground heat storage zones exist in the granite and metamorphism granite.The water temperature of hot springs in the study area ranges from 40~64℃, and the pH value, from 7 to 8.8.The hot springs are of medium-low temperature and are weakly alkaline hot springs.The stable isotope compositions of hydrogen and oxygen of the hot springs indicates that the hot springs in the Dabie Mountains area are of meteoric origin and have a slight ¹⁸O shift.Based on altitude effect, the elevations of recharge areas of the hot springs are estimated to be about 600~900 m, and the average temperature of the recharge areas is about 8.2℃.After receiving recharge from infiltration of precipitation in the Dabie Mountain area, groundwater is heated by heat flow from below during deep circulation, then rises to the surface along fault zones or fracture zones, and emerges in the form of hot springs in the lower parts of valleys and river valleys.The estimated temperatures of the geothermal reservoirs are 80~120℃, and the circulation depth of hot water, 1400~1800 m.The results with silicon enthalpy equation method and field investigation, indicate that there is no mixing of hot and cold water in hot springs AH2 and AH7.If hot springs AH6, AH11 and AH12 are exploited continually, mixing of hot water and shallow cold water will be expected.