太原东山岩溶水具有分区特征,岩溶水在补给区—径流区—深埋区,水化学类型按HCO3—HCO3.SO4—SO4.HCO3—SO4的顺序转换,水的矿化度、硬度依次增大,水温增高,SO42-含量增加.岩溶热水分布于深埋区,近年来区内岩溶热水井的涌水量呈现出不同程度的衰减.分析探讨了影响岩溶热水资源衰减的原因,认为大气降水量的减少、水源地的超采和煤矿下组煤开采的疏水降压是造成岩溶热水资源衰减的主要原因.通过岩溶热水资源的补排变化分析,得出岩溶热水资源的开采已经超量的结论. Karst water in Dongshan Mountain of Taiyuan has the characteristics of zoning. Karst water is converted into HCO3-HCO3.SO4-SO4.HCO3-SO4 in the recharge area-runoff area-deep buried area. The degree of salinity and hardness of water gradually increases , Water temperature increased, SO42- content increased.Karst hot water distributed in the deep buried area, in recent years the karst hot water wells in the area showed varying degrees of decline.The analysis of the impact of karst hot water attenuation causes, that the atmosphere The decrease of precipitation, the oversupply of water source and the drainage and decompression of coal mining in coal mines are the main reasons that cause the decay of karst hot water resources.Through the analysis of the recharge and replacement of karst hot water resources, it is concluded that the exploitation of karst hot water resources Excessive conclusions have been made.