Abstract: Two earthquakes(M_L4.1 and M_L4.0)occurred succssively in Yanggao of Datong and Douhe of Tangshan in Jun.28 and Jul.11, 2001.Based on the background anomalies of seismicity in north China and the feature of local small earthquake activity as well as some imminent precursory anomalies, we had given some trial imminent prediction before the two events.In this paper, the prediction course is summarized systematically, which may be significant to the prediction of medium and even strong earthquake.