Abstract: The paper introduced application of IP intermediate gradient in mineral forecasting of Dahe copper district. By analyzing geologic features and geophysical features of mineral district and processing and explaining the data actually measured outdoors, the paper blocked out three IP anomaly areas, qualitatively explained the anomaly areas, and gave positions and trends of polarization bodies in predictive area. The paper provided helps and directions for mineral prospecting in deep and outside of Dahe copper district.