Abstract: Jiurui ore concentration area is an important part of the middle and lower reaches of Yangtze River metallogenic belt.The study area of Pengshan polymetallic ore field is located in the south of Jiurui ore concentration area, which is rich in mineral resources, but the structural pattern is controversial.In this paper, based on the comprehensive analysis of geological and geophysical characteristics, it is proposed that Pengshan ore field is controlled by the structure of magmatic core complex, and the core of Pengshan magmatic core complex upheaval-detachment structure is composed of elliptical granitoid intrusive rock mass, which was a hidden uplift in the middle Yanshanian period and was shaped in the late Yanshanian period.The peripheral shallow sedimentary rocks are in a domed zonal distribution around the magmatic core complex.The peripheral fault zone tends to deviate from the direction of magmatic core complex and shows a shovel distribution, indicating the detachment structure characteristics.The halo type ore belt types of Pengshan ore field, with the concealed granitic body in the core as the center, the change of high temperature ore to low temperature ore occurs in the surrounding, such as arsenite(arsenopyrite)-tin ore - lead-zinc ore - fluorite ore - barite ore and so on, which is also the result of mineral enrichment along the multi-level detachment faults, and the mineralization occurs in the inner and outer contact zone of the magmatic core complex, forming skarn type, porphyry type and hydrothermal vein type Sn-Pb-Zn polymetallic deposits in the structural relaxation stage.