Abstract: The Yixingzhai Gold Deposit is the largest gold deposit in Shanxi Province.The practical problems urgently to be solved are to explore the deep ore genesis potentials and identify developed concealed ore bodies.With a comprehensive understanding of mineralization characteristics,controlling factors,and ore genesis,the primary halo geochemical method of deposits was utilized to conduct deep mineral exploration prediction research on the Tietangdong ore section of the Yixingzhai Gold Deposit.The primary halo anomaly shows that there are 2 main anomaly centers for Au at elevations of 400 m to 550 m and 0 m,with the largest scale of gold mineralization near the 0 m elevation.The anomaly area is exactly the inferred range of the ore body.The element axial zoning sequence of the primary halo from top to bottom was obtained as follows:Sb-Mn-Mo-W-Ni-B-Sn-P-Au-Hg-Cr-Co-Cu-Pb-Zn-Ag-Bi-As-Ba.Therefore,it is believed that the Tietangdong ore section has good prospecting potential in the deep.It is speculated that there may be a large-scale ore shoot near the elevation from - 400 m to - 500 m.The prediction results have been verified through drilling recently deployed,and an additional 8 tons of Au reserve have been added,providing reliable support for further prospecting work.