Abstract: The Wafangdian area located in Liaoning Province is well known for its rich diamond resources. Many researchers have carried out scientific study here, but so far there has been no technological breakthrough made in prospecting methods. This report carried out an experiment test for audio-magnetotellurics(AMT)application in the well-known kimberlite field, and also explored the effect of AMT application in deep detection. Five sections were designed specifically in the No. 30 kimberlite pipe, and the AMT results show that the pipe is characterized by low resistivity and distinct anomaly. On the basis of the geological data, we can preliminarily infer that the area presents the distribution characteristics of fault structure, metallogenic belt and low resistivity anomaly. This will provide the fundamental information for further exploration of mineral resources, and be of the importance in searching kimberley rock mass in the Wafangdian. This study provides new ideas for searching concealed kimberlites in other similar areas.