Abstract: Wafangdian region is an important diamond ore concentration area in Liaoning privence of china, and the metallogenic mother rock is mainly kimberlite. Based on the 1:10000 high-precision aeromagnetic data in Wafangdian region, combined with the regional geological background and rock magnetic characteristics, this paper analyzes and summarizes the aeromagnetic anomaly characteristics of the kimberlite. It is found that the distribution direction and shape of the kimberlite rock are mainly controlled by the NEE and NE faults. Generally, the magnetism of kimberlite is strong, which is quite different from that of surrounding rock. The kimberlite corresponds to the NEE-trending isolated aeromagnetic anomaly, and the shape is mostly elliptical. The anomaly amplitude is not greater than 50 nT, and the anomaly distribution range is greater than the exposed area of rock mass. Aeromagnetic anomalies have important indicative significance for the prospecting of kimberlite, which can be used to guide the next geological prospecting deployment.