The Huanggoushan Gold Deposit is located in the southwest of Linjiang City,Jilin Province,the east of the north margin of the North China plate,the middle of the Paleoproterozoic Liaoji active belt,the north of Yalujiang deep fault.The ore bodies mainly occur in the Paleoproterozoic Laoling group Zhenzhumen formation,diorite porphyrite and diorite,which are jointly controlled by the ductile-brittle shear zone and brittle fracture.The fluid inclusions in quartz of the main mineralization stage ores are analyzed by micro thermometry.The results show that the fluid inclusions in the main mineralization stages are gas-liquid two-phase inclusions and belong to the NaCl-H2O system.The complete homogenization temperature of the fluid inclusion is 140.9 ℃-229.6 ℃,the salinity is 4.48 %-12.42 %,and the density is 0.841-0.935 g/cm3,the mineralization pressure is 10-24 MPa,mineralization depth is 1.0-2.4 km,indicating the characteristics of low salinity,low density,medium-low temperature and hypabyssal.Comprehensive analysis thinks that the formation of Huanggoushan Gold Deposit is associated with Paleoproterozoic hydrothermal exhalation sedimentation and is a medium-low temperature hydrothermal vein type gold deposit resulted from late Yanshanian tectonic thermal events which underwent different degrees of metamorphism and deformation.