Abstract:The important roles and application prospects of some testing methods are briefly described,including acoustic emission,convergence inspection,stress measurement,subsidence measurement,level measurement in the process of stability and safety monitoring as well as inspecting of subsiding area in a roadway in composite hard rock. In terms of the modern signal analysis technology,the monitoring results and the stability of rock mass are synthetically evaluated,and the location of acoustic origin has been successfully detected according to the acoustic emission regularity. Finally,the key factors to affect the stability of rocks are obtained in subsiding area.