Through 1∶50 000 highprecision aerogeophysical survey in ErenhotDong Ujimqin Banner area, the authors found lots of aerogeophysical anomalies, which included aeromagnetic, aeroelectromagnetic and aerogamma energy spectrum anomalies. These discoveries have special significance in the oreprospecting work. Combined with geological and geochemical data, the authors studied these aerogeophysical data, analyzed the metallogenic regularity of this area, and delineated the polymetallic prospective areas as well as most important prospecting targets. Some anomalies were inspected, and some field work was conducted so as to bring the anomaly potential into full play in oreprospecting. It is believed that the highprecision aerogeophysical data can play a vital guiding role in the prospecting for iron deposits and polymetallic deposits. The results obtained by the authors can accelerate the ore-prospecting work and make new breakthrough in this aspect.