Abstract: Taking 4^-2212 working face of Jianzhuang Coal Mine as the research object, based on the number, energy and density distribution characteristics of microseismic events of microseismic monitoring system, we analyze and study the development height of water-conducting fractured zone and the behavior law of mine pressure in the working face.The study shows that: the ratio of caving and mining determined by the comprehensive microseismic event number, density and energy distribution characteristics is 3.8,the ratio of fracture and mining is 24.8,and the water-conducting fracture zone will be conductive to the aquifers of Luohe group; through the analysis of the microseismic event frequency and energy trend of the 4^-2212 working face, the total number of the periodic pressure is 19 during during mining period, initial pressure step is 46.53 m, and the average value of periodic pressure step is 22.81 m, thus the energy threshold for determining the failure and fracture of rock layers is 50 028.30 J.The results of our research and analysis of the microseismic monitoring system are compared with the actual production data of the mine, indicating that the two are basically the same, and showing that the monitoring results of the microseismic monitoring system are accurate and reliable.