Rock burst,which is the result of stress concentration in coal rock mass coupled with mining-induced tremors,seriously threatens the efficient safe production of coal mines.The complete microseismic wave which is derived from mining-induced tremors can be accurately recorded by the microseismic monitoring system in coal mines.Thus,it is generally used for velocity tomography and to calculate when the tremor occurs and the energy and source location of the tremor,etc..The study in this paper mainly utilized the microseismic signals (the energy,source location and temporal variation of tremors,etc.) to analyze the rock burst mechanism in Nanshan and Junde Coal Mine.Results show that rock burst sources of the insular longwall panel in Nanshan Coal Mine are mainly located at the adjacent gob area and the burst energy (the energy recorded by the microseismic monitoring system when a rock burst occurs) varies from 105 J to 106 J.Influencing factors are mainly the stress concentration in the insular coal pillar and the secondary fracture of the adjacent gob roof.It belongs to the type of rock burst induced by the primary static stress coupled with dynamic stress,whose energy is relatively low.Rock burst sources of longwall panel No.25110 in Yuejin Coal Mine are mainly located at the fault area and the burst energy varies from 104 J to 108 J.Influencing factors are mainly the fault re-activation,pillar failure and roof fracture.It belongs to the type of rock burst induced by the primary dynamic stress coupled with static stress,whose energy is relatively high.It is concluded that the investigation and analysis of microseismic signals is in favor of the understanding of rock burst mechanism which provides a guidance on rock burst control.