Yangpingguan area is located between the Longmen Mountain orogenic belt and Micang Mountain orogenic belt,which are well known as mainland of orogenic belts.The tectonic deformation of Yangpingguan faults is effected obviously by above two orogenic belts during the faults formation.Based on research on the plates and fault plane of Yangpingguan fault,tectonic deformation times and regional tectonic stress field were discussed.It is concluded that there are six tectonic stress field,such as the first period with EN-SW squeeze,the second period with NW-SE squeeze,the third period with S-N squeeze,the fourth period with EN-SW squeeze,the fifth issue period with NW-SE squeeze and the sixth period with EN-SW stretch.Tectonic deformation of Yangpingguan region continued progressed from late Indosinian to Himalayan periods.