Carbonnaceous bed is one of the major interfering factors in geophysical exploration, especially in electrical exploration. Aimed at finding an effective method to distinguish carbon anomalies from orecaused anomalies, the authors employed such integrated geophysical exploration methods as highaccuracy ground magnetic survey, timedomain induced polarization method (TDIP) and controlled source audiofrequency magnetotellurics (CSAMT) in search for ore deposits in Beishan area, Gansu Province, and attained remarkable achievements. The technique was successfully used to upgrade a leadzinc ore spot to a potential mediumsize polymetallic deposit. An integrated application of several geophysical methods can avoid such disadvantages in utilizing only one method as limitation and interpretation ambiguity. Such an integration has full advantages of all the geophysical methods, and can effectively distinguish orecaused anomalies from hidden anomalies related to carbonaceous covering bed. The results obtained by the authors are of great guiding significance for oreprospecting work in Beishan area of Gansu Province.