Abstract: In the center part of Damaoqi district, fluorite deposits are distributed in a docking zone of proliferation of the northern margin of the North China Plate and the Paleozoic continental margin. Where, fold and fault structures developed well with very strong magmatic activities. In particular, the Wulanbulag-Huhtunbu fault as a conversion boundary of different construction units, featured with a long period of activities, great depth and a large area of influence,obviously framed the distribution of magmatic rocks and mineral resources in the area, which is surrounded by more than 20 iron, niobium-rare earth, gold, copper, fluorite and other deposits. The geological conditions of fluorite mineralization are good and the geochemical anomalies are well developed. The fluorite deposit is controlled by structure, magmatic rock,stratum and wall rock alteration. At present, 11 fluorite deposits with industrial value, mainly large-medium-sized and distributed centrally, have been found, which can be divided into 3 ore-concentrated areas. Based on the characteristics of the fluorite deposit in this area, this paper analyzes the geological factors of fluorite ore control, discusses the origin of the deposit, puts forward the prospecting mark and points out the prospecting direction.