The Xinzhai ore deposit discovered in recent years is a large-size tin deposit. On the basis of early period regional geological and geochemical survey, an arrangement of integrated geophysical methods was made. In accordance with the idea of outskirt ore-prospecting and ore-search based on known ore spots, the dual-frequency electromagnetic sounding IP method was employed in the work area. Electromagnetic sounding underground rock reflected the fabric patterns and related electrical anomalies, while IP measurements reflected the limits and unusual polarization characteristic frequency of a good ore body. In combination with various kinds of information and professional knowledge, the analytical capacity of geological ore-prospecting can be improved and the risk can be reduced. It is shown that at the depth of the Xinzhai work area there exist good prospects for mineralization.