The Huachanggou gold deposit of Shaanxi Province occurs in the submarine basic volcanic effusive spillite. Based on field geological work in the Huachanggou gold deposit, this paper analyzes trace elements of the samples in the north ore zone by such means as geo-mathematic analysis and calculation of the primary halo zoning. The result shows that the front halo elements are Sb, As, Cu, Hg, the near-ore halo elements are Au, Ag, Bi, Pb, W, and the rear halo elements are Ni, Co, Mn, Mo, Zn, Cd. The primary halo axial zoning sequence from the top to the deep part of the north ore zone is Hg-Bi-Mo-Au-Ag-As-Cu-Pb-Co-W-Mn-Sb-Ni-Zn-Cd. According to the characteristics of threshold halo zoning, the ideal zoning model of the primary superimposed halos is built.