Abstract: The Xinwusu Mining Area is located on the northern continental margin of the North China Plate，the passive continental margin of Baoyintu-Xilinhot volcanic type and Chagancilao-Bayinhangai gold metallogenic belt （Ⅳ74），it is a favorable area to search for hydrothermal Cu-Fe ore related to the acidic magmatic activity of Yanshanian epoch，especially，the lower part of the secondary tectonic quartz veins of NEE trending large fault is favorable for mineralization.Bayinhanggai，Tugurige，Chagancilao Gold Mine and Dongkagan Iron Mine have been successively discovered in the ore belt.In order to determine resource reserves of the deposit and the geological characteristics of the ore body in detail， the geological characteristics and metallogenic theory of the adjacent Changxing Iron Deposit and Zagawusu Iron Deposit were compared.On the basis of summarizing and analyzing the existing achievements of general survey and detailed investigation，through 1∶2 000 geological surveys，mineral geological drilling，the geological characteristics of the mining area was studied comprehensively.The results showed that:①The mining area mainly exposes the dolomite， phyllite， carbonaceous slate and quartzite of Baoyintu Group of Lower Proterozoic，Silurian Xuniwusu Formation strata are exposed in the southeast of the mining area，Quaternary strata covers a large area in the exploration area and the magmatic rocks are not developed；②Orebodies are distributed in the Early Paleozoic Silurian Xuniwusu Formation， a total of 14 orebodies were delineated，including 4 Cu-Fe orebodies and 10 iron orebodies （7 are outcrop ores， others are concealed orebodieds）， the genetic type of the deposit is hydrothermal copper-iron ore；③The ore body is controlled by NEE-oriented geological structures， and most of them are distributed in EW and NEE-oriented belts or veins，the secondary structural belts with large faults are favorable locations for ore-controlling and storage.According to the comprehensive analysis of Xinwusu Cu-Fe Deposit，the integrated prospecting model of the mining area was established，and three prospecting target areas were delineated （numbered B1，B2 and B3）.The orebodies are mainly controlled by structures，and the large fault is 2.2 km long in the mining area.The orebody should have a certain scale of depth along the strike and inclination，and the mining area has good ore prospecting prospect.

Key words: Cu-Fe deposit, geological characteristics of deposit, integrated prospecting model, prospecting sign, prospecting target area