This paper introduces the geologic setting, deposit geology, geophysical/geochemical anomalies, alteration, ore body geology, ores quality, mineralization period and stages of Rongna super large porphyry-epithermal compound copper deposit, Gaize county, Tibet, and discusses the source of mineralization elements. Rongna copper deposit is a compound deposit with high-sulfur epithermal deposit on the top and porphyry deposit on the lower part, although it is in the same structure-magma. It is the largest copper deposit in Duolong mineralization concentration district, with 332+333+334 resource up to 11 million tons at a grade of 0.53%. This paper clarifies the deposit types, geology, structure and mineralization, establishes a geological model to predict ore deposit in Rongna deposit, southern Tiegelong, and summarizes its structure, and analyzes the further prospecting and resource potential combined with CSAMT.