Abstract: Jinping Au-Ag deposit, occurred in the volcanic rock of Upper Jurassic Nanyuan formation on the east of the Mesoproterozoic metamorphic basemental tectonic window, is composed of No.Ⅰmineralized altered fracture zone, No.Ⅱ and Ⅲ quartz veinlet belts, and altered auriferous andesite.The ore-forming solution is characterized by low ¹⁸O and high water/rock value, suggesting that the mineralizing medium should be meteoric water.The deposit is of heated meteoric water hydrothermal deposit.