In the Duobaoshan—Daxintun area, types of Cu deposits are dominated by the Variscan porphyry deposit of the Duobaoshan type, and the Early Yanshanian skarn deposit of the Sankuanggou type, and then the Late Paleozoic volcano—sedimentation Cu—Pb deposit associated with marine volcanic rocks. Spatial distribution of these Cu deposits of different types and mineralization ages are obviously controlled by Paleozoic marine volcano—carbonatite Formation. These Cu deposits have significant potential for Cu mineralization, and have characteristics of porphyry—epithermal Cu—Au metallogenic system (i.e. up Cu and down Au). Au mineralization in this area is characterized by Late Yanshanian strong epithermal Au mineralization of the Sandaowanzi type. These Au deposits are associated with ductile—shear and strike-slip motion of early Carboniferous to Early—Middle Jurassic, metamorphic core complexes of Middle Jurassic under the main extensional stage, and turbidite of Ordovician (i.e., the Carlin-type). These Au deposits, controlled by NE- and NW-trending volcanic structure, metamorphic core complex structure, and ductile—shear and strike-slip motion, are mainly small- to medium-scale, but have a great perspective for prospecting. Combine with achievement and progress of recent exploration, this paper is aiming to summarize the metallogenic regularity of the Duobaoshan—Daxintun area, and teases out key geological issues constrained on the prospecting breakthrough of Cu—Au polymetallic deposits, and proposes prospecting direction for exploration arrangement in the future.