Abstract: Abstract：Pt-Pd-Cu ore-bearing formations in eastern Yunnan include the black shale ore-bearing formation and basalt ore-bearing formation. The authors mainly made a systematic study of the geochemical characteristics of the Proterozoic Kunyang Group, Lower Cambrian black rock series and Permian Emeishan basalt. Study shows the followings: (a) the black rock series of the Proterozoic Kunyang Group is characterized by significant enrichment of As and B (K≥5) and enrichment of Sb, Pd, Mo, Ag, U, Pt, V, Zn, W and Cu (K≥1.2); (b) the Lower Cambrian black rock series is characterized by significant enrichment of Mo, Ag, U, As, V, B, Pd and Sb (K≥5) and enrichment of Pt, Pb, Zn, W, Cu and Ni (K≥1.2); (c) the Permian Emeishan basalt is characterized by significant enrichment of Pt and Pd (K≥5) and enrichment of Au, Ag, Cu, Zn, Sb, B, U and V (K≥1.2). In conclusion, the black rock formation and Permian Emeishan basalt distributed at different horizons in the study area form the primary ore source bed of noble metal elements (Pt, Pd, Ag, Au etc.) and nonferrous metal elements (Cu, Mo, V etc.) in eastern Yunnan Province. The areas that are best coupled by the above-mentioned regional ore-forming factors may be regarded as the potential areas where nontraditional ore deposits of noble metals(Pt, Pd, Ag, Au etc.) and nonferrous metals (Cu, Mo, V etc.) possibly occur.