Fodongmiao-Hongyazi in an important margin fault which developed at the middle part of the northern Qinlian Mountain and the south of Hexi-corridor, the main trending is NWW with length 110 km. The fault is a fault is a left-lateral reverse strike-slip fault during the Holocene periods, it is also the seismogenic fault of Hongyabao M7 1/4 earthquake in 1609. The activity of the fault formed a series of geomorphology like fault scarp, terrace and gully left-lateral. In this study, based on the detail field work, we choose the typical geomorphology cell carried on large scale differential GPS measure.