Abstract: In this paper, the authors tried to explore regional deep-seated structures and their roles in the ore-forming process in the Erlian-Dong Ujimqin Banner area based on the result of 1:200000 gravity and magnetic data interpretation and the study of regional geological data and physical properties of rocks. Metallogenic settings of Late Paleozoic were studied based on the zonation of gravita-tional and magnetic fields in the study area. The interpretation of gravity and magnetic anomalies indicates that the NE-trending structure is predominant in the west of the area, and densely distributed reticular structures in the NE and EW directions are present in the east, which are more favorable for mineralization. The most promising areas are Dong Ujimqin Banner and Holingol in the east, where intermediate-acid rocks are well developed. The study of 1:200000 gravity and magnetic anomalies provided important information in search for endogenetic metallic deposits from different aspects in the study area, and as a result, 6 prospective zones were delineated.