Abstract: Yuejingqiao Hot spring are Rise Springs，The hot water chemical type is HCO3-－Ca2 ； According to analysis of the stable isotope δD、δ18O，source of the hot spring water is mospheric water；δ18O stable isotopes determine that the supply elevation is 2050m; The 3H radioactive isotope recognizes the age of hot springs water as 10～20 years。The heat of the springs comes from the area of high heat flux background，Chengka and F1 faults play the role of thermal and water conductivity，The formatiion model is low-temperature geothermal systems which the atmosphere water recharge and infiltration circular by fault。