Abstract: Based on petroleum geophysical prospecting data, this paper studies the seismic tectonics and its activity in northern area of Shangdong province. We get new results on whether the Wudi-Yidu fault extended to Dongying depression and the relationship between the seismic activity characteristics and earthquake controlling tectonics in Huimin-Zhucheng seismic belt. This is important for understanding the evaluation of seismic risks and research of earthquake prediction in northern area of Shandong.