In order to study micro-seismic signal characteristics of coal rock burst. Monitoring test of coal mine micro-seismic signals was detected by using micro-seismic monitoring system,and analysis of the micro-seismic signal the regularity of coal rock burst were carried out. The test results show that the change trend micro-seismic signals correspond excellently with the strength of coal rock burst,the basic was positively correlated. Micro-seismic signal intensity,coal and rock rupture accompanied by greater energy gradually decreased with the time increasing,micro-seismic signal also decreased significantly,finally the rear sensor not detected signal.