In this paper, the authors chose the Nihe porphyrite iron ore in the Luzong District, Anhui Province, as a trial site. Audio magnetotelluric(AMT) sounding, controlled source audio magnetotelluric(CSAMT) sounding and transient electromagnetic(TEM) sounding were carried out. Through the processing and inversion of AMT, CSAMT and TEM data, it is discovered that ore-controlling geological bodies are basically similar in electrical characters but different in some details. According to the results of three methods and electrical characters determined distribution of the Zhuanqiao Formation volcanic rock and identified positions and shape of diorite porphyrite, it inferred the position of ore bodies.