The high-precision topographic and geomorphic data of the Bolokenu-Aqikekuduk fault on the east bank of Wusutonggou are obtained by the UAV photogrammetry technology,by interpreting DEM data and field investigation. Right-lateral displacement is about 19.3~31.1m on the alluvial-pluvial fan of the east bank of Wusutonggou. By analyzing the scarp profile and comparing the degree of erosion of the landforms on both sides of the scarp,we find that the scarp is eroded by the later flow,and the height of some scarp is enlarged to a certain extent. The actual vertical dislocation of the fault is about 0.7m. The great potential of UAV photography technology in active structure research and its unique advantages in microstructural information extraction are demonstrated by examples.