Abstract: Based on the results of 1∶50 000 stream sediment survey，good anomaly area is locked out in the southern margin of Mohe basin，where the 1∶20 000 soil geochemical exploration work is carried on，and then the preferential areas are revealed so as to find the breakthrough in exploring nonferrous metal mineral.The results show that，the mineralization of lead，zinc and molybdenum are good，and several lead，zinc and molybdenum ore bodies can be confirmed.It provides the prospecting target area and direction.Soil geochemical concentration center and sediment concentration center of lead，zinc and other elements basically fit with.It is shown that,based on the anomalous stream sediment in this area，the soil geochemistry method for searching nonferrous metals is effective and reliable，such as lead，zinc and so on.lead，zinc，molybdenum ore bodies that have been found，are controlled by the contact zone of Guanghua group rhyolite and middle Proterozoic gneissic complex rock.It also proves that the method of soil geochemical exploration is effective in prospecting nonferrous metals in this area.

Key words: Soil geochemical exploration, Southern margin in Mohe basin, Reveal the cover in project