Abstract:In this paper, using microseismic monitoring technology monitor in the fracture area of main roadway roof around the goaf in the third level of Chengde Tongxing mining. In the process of monitoring, an effective early warning of roof caving in this area was put forward. Through the confirmatory analysis based on the microseismic monitoring data, it can be known that the aggregation degree and the variation of the number of microseismic events in the region，energy index of microseismic event，and the time variation characteristics of cumulative apparent volume and energy index can be used to analyze the stability of roadway around the goaf of Chengde Tongxing mining and as the reference of ground pressure monitoring hazard warning.