Abstract: The Erdaokan Ag-Pb-Zn Deposit is a large independent silver deposit recently discovered in theDuobaoshan ore province. It not only represents the first independent silver deposit found in Heilongjiang Province butalso provides a significant case study for understanding regional metallogenic regularity. Owing to the lack of systematicresearch and low degree of deep exploration in the Erdaokan Ag-Pb-Zn Deposit, multi⁃source data, including geological,drilling, and geochemical information, were systematically collected and integrated. By using Micromine software, a 3Dgeological model of the mining area was established. Guided by the "trinity" prospecting prediction theory, deep mineralprediction was conducted by integrating the cube prediction method and the information quantity method for prospecting,resulting in the delineation of 4 prospecting target areas. Results indicate that structural breccias, intersections of NE⁃and NW⁃trending faults, and Ag,Pb,Zn anomalies in the Erdaokan Ag-Pb-Zn District can serve as direct prospectingindicators, suggesting substantial exploration potential remains at depth.