This paper re - analyzes the geological features and ore - controlling factors of Yaohuogou copper mine on the basis of studying on the representative deposit continuously,which is located at the central - southern part of Zhashan Basin,and the middle of Xiaohekou - yuanzijie Fe - Cu - Au metallogenic belt.It is found out that the ore body is near - bedded and lenticular shaped,occurred in the interlayer fissure between the third rock section（C₁r³ ） and fifth rock section（C₁r⁵ ） in the Eryuhe Formation of Carboniferous System.The host surrounding rock belongs to the epidote garnet skam,and the diopside garnet skarn.The metallic minerals of ore mainly include chalcopyrite,bornite, magnetite,pyrite,pyrrhotite,etc.The gangue minerals mainly consist of garnet,diopside,calcite,and so on.The ore body and skarn ore belt are controlled by interlayer fissures,because the analysis result of S,O,Pb isotope and fluid inclusion,H - O isotope in the ore - forming fluid shows the water in hydrothermal fluid comes from magmatic water in the same mineralization belt.It is considered that the deposit is the bedded skarn deposit.The formation model of the deposit has great guiding significance in searching for this kind deposit in the Zhashan Basin.