Using gravity, geomagnetic and other geophysical data obtained in Luoy-ang and southern Shanxi, this paper has analysed gravity and magneticanomalies and deep structures in geothermal fields of these areas and revealedspecific characteristics of gravity and magnetic anomalies related closely togeothermal fields. Based on the data provided by us, the geological party hassuccessfully drilled a geothermal well whose temperature reaches 61℃.