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A comparative study on characteristics of geology��petrography and microthermometry of fluid inclusions between Wulong and Sidaogou gold deposits surrounding the Sanguliu granodiorite body in Dandong of Liaoning has been carried out�� The results show that there were some definite differences in their origin�� The ore-forming solutions of the auriferous quartz veins in Wulong gold deposit and the early quartz veins in Sidaogou gold deposit both derived from Sanguliu magmatic activity��while the ore-forming solutions of the major metallogenic stage in Sidaogou gold deposit may be related with the activity of intermediate-acidic dykes in the late stage of the Yanshan movement��