Abstract: The high density resistivity method， together with two devices of Winner and dipole suitable for field operation being selected， was used to measure the electric resistivity of main rock and ore in Anshan-Benxi area. According to the determined basic parameters， three kinds of goaf detection models were built respectively for simple geological conditions， conditions with surrounding rock and complex geological conditions. The regularities of electric field distribution and characteristics of goaf anomaly reflected in different geological conditions were discussed in detail. The results indicated that the existence of geological bodies with unequal electrical properties affects the reflection of goaf anomaly， which is often reflected in the form of secondary anomaly or weak anomaly in complex geological conditions. With the application of these models to the interpretation of goaf detection results of iron mines in Anshan-Benxi area， several goafs are predicted accurately， thus testifying the effectiveness of these models.

Key words: high density resistivity method, iron mine, concealed goaf, detection model, secondary anomaly