Abstract:Conductivity type of pyrite in deep part of Jiaojia gold deposit in vertical is N type, while the contents of P type pyrite in shallow part are more. From deep to shallow part, oreforming fluid temperature is gradually lowered. Mineralization temperature of pyrite in deep part is 400~500 ℃, mineralization temperature of pyrite in shallow part is 150~250 ℃, mineralization temperature of pyrite in middle part is within the scope of these two temperature ranges. It reflects that oreforming fluid temperature is decreasing from deep to shallow during this period.