The Fukang-Jimsar fault, a Holocene active fault, is considered as a borderline fault between Bogeda Mountain and piedmont alluvial-pluvial fans. Piedmont alluvial-pluvial fans and low terraces of rivers were bended in different degrees since the middle and late Holocene. The fault cross-section near Dalongkou indicates there were three paleoseismic events during late Pleistocene, and the recurrence interval of earthquake on the east segment of the fault is 4500 -7500 a. The obliquity of the Fukang-Jimsar fault inclination decreased when it reached the ground, and scarps on the surface were formed by the bending strata. The section reveals the ways of displacemental diminishment and deformation distribution near the ground.