Abstract: According to the actual production situation of Xinli mining area in Sanshandao Gold Mine，a high sensitivity seismoscopes sensor is laid out，and a microseismic monitoring system platform is built.The microseismic monitoring technique is adopted for ground pressure monitoring of deep deposit; the onset-time picking waveform is analyzed and made the positioning calculation by host computer.Since established，the system runs well，which improves the underground production safety and effectively prevent from underground rock burst water inrush accident with good economic and social benefits achieved.

Key words: Microseismic monitoring, Source location, Mining engineering, The onset-time picking