Abstract: By means of field geological survey on the Lintong-chang'an fault scarp of the Shaolingyuan segment near the Xiaobaopi village, with loess layers OSL measure and drilling, we studied the geomorphic mark, activity style, scale and the average slide rate of Lintong-chang'an fault since later Quaternary. The fault obviously dislocated off the ancient soil layer (S₁) bottom, and upper fault fissure extended into the ancient soil layer (L_1s), according to OSL measurement results, the fault is still active since later Quaternary. Regarding layer (S₁) stable trend surface beside fault as mark layer, its disturbed distance is about 5m.

Key words: Active fault, The Lintong-chang'an fault, Later Quaternary period, Activity