Chang’an Gold Deposit is located in the south part of Ailaoshan fault,simultaneously controlled by Ganhe fault and Tengtiaohe fault,Sanjia fault and Ganhe fault.The orebodies in the district are controlled by strata,lithology,tectonics and magmatics.F6 fault is the most important ore-controlling structure discovered.3 groups of orebodies with different occurrences develop along the F6 fault and its upper wall peripherals,including the orebodies in F6 fault fractured zone,the steeply inclined orebodies east to the upper wall peripherals of F6 fault,and the moderately inclined orebodies east to the upper wall of F6 fault;the 3 groups of orebodies all are characterized by pinching out and reappearance and echelon layouts,and have great prospecting potentials in space.NW,NNW,near SN faults are closely related to ore forming,and also have great prospecting potentials;magmatic rocks are closely related to prospecting,and there are prospecting potentials for skarn type orebodies in the deep parts of peripherals.