Abstract: Aiming at the problem of the mine laneway monitoring system diagnosis and early warning function is weak,inperfect system,the de-noising method of blasting vibration，the determination of surrounding rock categories，and the evaluation index of blasting vibration effect based on the wavelet energy theory are integrated to form a long-term real-time monitoring，diagnosis and early warning system to supervise the safety of surrounding rocks for metal mine.The system consists of such modules as optimization of monitoring points，de-noising of monitoring signal，analysis of signal frequency-domain energy，determination of surrounding rocks categories，safety discrimination of surrounding rocks，and safety pre-warning of surrounding rocks.The largest function of this system is that it can make the diagnostic analysis on the real-time signals and contract with the accumulated database files to draw the final diagnosis conclusion and then the related engineering measures are given.The system provides a foundation for improving the technical level of safety supervision for metal mines.

Key words: Metal mine, Surrounding rock, Safety, Wavelet theory, Monitoring, diagnosis and early warning system