Geothermal energy is a kind of clean, renewable energy, in order to develop geothermal resources in a scientific and reasonable way, to provide geological basis for geothermal development drilling work, the use of controlled-source audio geomagnetic method based on the geomagnetic method and audio geomagnetic method was developed on the basis of the controlled-source audio geomagnetic method technology, to obtain high-quality data, through a reasonable processing and inversion of the geological results obtained, effectively for the groundwater investigation and geothermal exploration, with reference basis. The basic principles, construction methods, data processing, and the successful application of the controlled-source audio geomagnetic method was adopted in geothermal exploration in Xinzheng, and the favorable storage site of geothermal energy in the region was accurately deduced, boreholes were arranged to verify it.