In order to investigate seismicity in the peripheral areas of the Ordos block after the 2008 Wenchuan earthquake, the authors analyzed evaluative course of the current vertical deformation in the Fenwei fault-depression zone using fault-crossing leveling data situated on different locations. The following are obtained: 1) the vertical movement extent of ascending and sinking difference is about 20 mm, and there is no obvious exceptional deformation; and 2) small earthquake activities may be transient instability of horizontal stress field of Ordos block, due to adjustment of compressional stress from Qinghai-Tibetan Plate and relative strengthening of compressional stress from North China sub-plate.