The Guoluolongwa gold deposit, located in the Eastern Kunlun orogenic belt．40Ar/39Ar dating has yielded ages of 201.8~229.3Ma, centered on 202.2~204.6Ma, Average date are 202.7±1.5Ma.The homogenization temperature of fluid inclusions ranges from 126℃～280℃while salinity ranges from 6.8～17.5(wt%). The characteristics of ore-forming fluids show that mineralization is closely related to magmatic hydrothermal, indicating that the deposit is a medium temperature magmatic hydrothermal deposit. The gas component of fluid inclusions are dominantly H2O and CO2, with minor CH4 and H2. The cation ions in fluid inclusions are mainly Na+ and K+, and the main anion ions are SO42- and Cl-. That is to say, the oreforming fluids are generally characterized by Cl->SO42- and Na+>K+, which belong to CO2-Na+(K+,Ca+)-Cl-(SO42-,F-)-H2O type fluids.