The Hailimin fluorite deposit in Inner Mongolia is of hydrothermal vein type, whose fluorite quartz orebodies are controlled by a NWtrending faulted zone. The very low frequency electromagnetic method (VLF EM) was used to conduct ore prospecting studies in the ore district. As a result, distinct very low frequency electomagnetic anomalies were detected over the known orebodies, which proves the effectiveness of this method in search for such type of fluorite deposits. In the concealed area, the very low frequency electromagnetic anomaly reveals that the ore controlling faulted zone remains existent, which is likely to contain fluorite orebodies.