Abstract: Based on the ground magnetic survey in the Eastern Hebei iron orefield, the processing methods for the magnetic data are discussed. The stacking of different anomaly sources forms complex magnetic anomaly, in which the object anomaly is not clear. In this situation, the interpretation of small-amplitude low-gradient anomaly and complex anomaly should not only rely on the data processing techniques, but also combine regional geological conditions and metallogenic regularities. It is significant to assess different magnetic anomalies with different data processing methods.