Abstract: The copper & gold deposit of the north—east section of Xishan as sembles copper、gold and sulphur together, its reserves is rich and grade is high having important economic value and characteristic traits of geology.The writer applies the first—hand data of worksite and research results of the predecessors on source of mineralizde matter, space form, inborn state of gold and silver deposit, ore and rock—controlling structure of this deposit, forming a new recognition on the mineralizing traits, the type of contributing factor and new train of thoughts on seeking for minerals in the future.