Abstract:Through the field investigation of 1︰50000 ground high-precision magnetic survey, the aim was to find a favorable prospecting target area in this area. Through geophysical magnetic survey, original magnetic anomaly data was obtained. In order to accurately analyze and explain the relationship between magnetic anomaly and geological features, based on the analysis of reduction to the pole、upward continuation and anomaly feature analysis, the scope of the magnetic anomaly was outlined, spatial characteristics of intrusive rock mass was determined, ore-forming target areas was screened and reasonable inferences was made: the anomaly C1 was caused by concealed rock masses with large burial depth, strong magnetic properties, and large scales from large to small scale in the vertical direction. The anomaly C2 was caused by shallow copper polymetallic mineralization. The anomaly C3-1 was caused by medium-acid rock mass with burial depth and small range in the structural belt. The anomaly C3-2was caused by fracture structure. The whole trend of the magnetic anomaly was basically consistent with that of the structural belt within the Xijinwulan-Jinshajiang suture zone, which was caused by the ore-bearing tectonic belt within the Xijinwulan-Jinshajiang suture zone. The characteristic analysis of magnetic anomalies can provide favorable evidence for deep prospecting of polymetallic deposits.