Abstract: Gouli area is an important gold ore concentration area in the eastern section of the East Kunlun tectonic belt.At present,a series of large and medium-sized gold deposits and many gold spots have been found in the area,such as Guoluolongwa,Asha,and Walega.A comprehensive study on the geological characteristics of the 3 typical deposits,namely Asha,Guoluolongwa,and Walega in the Gouli area.The results show that the gold deposits in the Gouli area were mainly formed in the late Indosinian period,during which the intense magmatic activity provided materials and heat source for the formation of gold deposits;the mineralization is controlled by fault structures,among which Kunzhong fault and its secondary Xiangride-Delong fault are the main ore-guiding and ore-controlling structures,while the lower order NE and NW faults are the main ore-hosting structures;the ore-forming fluid of the gold deposits in Gouli area is the fluid system of H2O-CO2-NaCl-CH4 with medium to low temperature (130.0 ℃-360.0 ℃),medium to low salinity (1.83 ％-18.00 ％) and low density (0.62-1.03 g/cm3).The study of H,O,S,and Pb isotopes of ores shows that the ore-forming materials are derived from the magmatism of the orogenic belt,and the ore-forming fluids are mainly magmatic water in the early stage,mixed with atmospheric precipitation in the late stage.The genetic type of gold deposits in the Gouli area is orogenic gold deposits related to late Indosinian orogeny.