Jimo hot spring is one of the three chloride hot springs in Jiaodong area. It is medium radon geothermal water and has high medical value. At present, hot spring exploitable resources account for 56% of the total and have high exploitation potential. However, due to the vigorous development of tourism, large- scale exploitation of geothermal water has caused groundwater level to drop by nearly 20 m from 1992 to now, and the salinity, chloride and sodium ions have little change, which indicates that the seawater intrusion degree of monitoring wells is low. At the same time, the calculation shows that the available thermal energy resources of Jimo hot spring are 1. 28×10 15 J, equivalent to 8. 79×10 4 tons of standard coal, the underground hot water reserves are 0. 68×108 m 3, and the recoverable groundwater resources are 1075. 31 m 3/d. Through the evaluation of the development conditions simulated by modflow software, the reasonable suggestions of monthly mining amount are put forward:1450 m 3/d in December to next year March, 450 m 3/d in AprilJune and 100 m 3/d in July- November.