Shilin is a national geological park which is located in eastern Yunnan basin. The study on its geothermal is the theoretical demonstration of Yunnan rift basin geothermal. This paper studied the geothermal type, geothermal field structure, hydrogeological characteristics and water chemistry characteristics. The geothermal type belongs to deep cycle layered geothermal field and controlled by Jiyxiang-Shiyakou fault and Niutoushan ancient land so as to form the low temperature geothermal field of close layered. According to the hydrogeological conditions, the chemical type of geothermal water is HCO3-Ca with high silicic acid content. As the geothermal reservoir is deeply buried, its water temperature is from 45to 51centigrade and with pressure-bearing, the underground hot water is suitable to exploit. While the resources supply is limited and the upper cold water is rich, the development and utilization of geothermal water should be controled. The result has application and reference value for the development of other eastern Yunnan karst rift basins.