Abstract: Fault gouges rich in clay minerals are widely found in natural faults. The history of the activity of a fault is often recorded in the soft and easily deformed fault gouges. In the paper, a modeling of the stick-slip and creep-slip of faults with natural fault gouges is made.The nicrostructural features so produced is compared with those of natural fault gouges. An integrated analysis with the macro-seismogelogic data suggests a definite relationship between the microstructural features of fault gouges and the stick-slip or creep-slip of faults.