Abstract: Abstract：A deep-penetrating geochemical research project has been designed to improve the exploration techniques through a comparison of related methods in various concealed deposits in the Hua′obote lead-zinc districts, Inner Mongolia. This paper describes the results obtained by a comparison of the measurement of mobile metals in overburdens, separatory electrogeochemistry, geogas measurement and soil measurement. Notable geogas, water extraction and electrogeochemical anomalies have been found above hidden gold orebodies at 70 m depth, which are coincident with the location of the known orebodies to a higher degree, indicating that the deep-penetrating geochemical methods have good prospects in exploration for concealed deposits.