Abstract: In order to solve problems of special construction, complex operation and poor reliability of normal contact forecasting method of coal and gas outburst at present, the paper put forward a design scheme of monitoring system of coal and gas outburst based on DSP and single-chip microcomputer according to basic principle that coal and gas outburst would accompany electromagnetic emission signal, and gave structure，function and realizing methods of software and hardware of the system. The system adopts dual-CPU working mode of TMS320C5409 DSP and AT89S5 single-chip microcomputer, namely TMS320C5409 completes tasks of data collection and procession and AT89S5 does tasks of coordination of the whole system and man-machine interaction, which greatly improves operating efficiency and realizes real-time and non-contact prediction of coal and gas outburst.