Abstract: The paper applied geophysical methods to analyze rock mass fracture and fault slippage characteristics based on microseismic data inversion.Moment tensor inversion analysis can clearly describe the stress status at the seismic source and the application of moment tensor decomposing can explore the seismic source fracture face occurrence and the seismic source fracture pattern.The moment tensor inversion analysis method is applied to indentify microseismic events greater than -0.5 magnitude in a mine.The microseismic events of the rock shear-slip failure type are classified with DEV greater than 60 % as the classification principle,and the rose diagram of the rock mass fracture face orientation is mapped according to the fault plane solutions.The result shows that for the F310 fault,activities are frequent,the magnitude of microseismic events is relatively great,and the rock mass fracture face orientation is dominated by NEE-SWW.There is a frequent microseismic event area in the mine between the W9 and W11 lines.The F350 fault is relatively stable,but it is tangent to the ore body,so the stoping and development workload increases.Attentions should be paid to the microseismic events and activities surrounding the fault.