Abstract:In this paper, remote sensing interpretation and comparative analysis of active faults are made based on remote sensing data, earthquake data and focal mechanism solutions. Our research shows that the geomorphic features of the northern segment of the Yadong-Gulu fault are results of combined action of normal fault and dextral strike-slip fault. Extensional movement, sinistral strike slip movement and graben structures are found in the middle segment of the Yadong-Gulu fault, and gully dislocations show a horizontal displacement of 6 m to 66 m along this fault.The 1411 southern Damxung earthquake of M=8.0 caused a horizontal displacement of 6 m to 16 m along the fault. Secondary faults are fully developed in the southern segment of the Yadong-Gulu fault. The north end of the southern segment shows characteristics of dextral movement, while it turns to sinistral movement on the south side. Graben structures are also fully developed in this segment. The strike-slip faults control the occurrence of earthquakes in the shallow crust (above 8 km), which are mainly strike-slip type. Graben structures are caused by normal fracture tress mechanism in the deep crust (below 8 km) and control the earthquakes in the deep crust. The Lhari fault is generally buried. The dextral motion is found in its west part, while the southeast part of the Lhari fault shows characteristics of sinistral movement. The stress mechanism and earthquake events in the Lhari fault area are strike-slip type.