Abstract: Zhesang micro disseminated type gold deposit of Yunnan Province is located in Yun-nan-Guizhou-Guangxi “golden triangle”area which hosts a series of Carlin-type gold deposits. Research on the ore characteristics and gold occurrence states shows that gold exists in the form of microscopic or submicroscopic natural gold mainly in metal sulfides or metallic oxides, such as pyrite and arsenopyrite, and secondly in gangue minerals, such as silicate and carbonate. Half of the total gold is included in sulfide ore, with around 20% in some gangue minerals such as sericite, vein quartz and carbonate, around 20% inclusive gold in silicates, and the rest, less than 10%, existing in the form of free gold. In case that the ore is of metallic oxide type, gold exists in the form of free gold in carbon or clay minerals, making up over half of the total gold.