Abstract: The Cixian-Daming fault is one of the important faults in North China earthquake area. It is the seismogenic structure of the 1830 Cixian M7.5 earthquake. Based on the results of shallow seismic exploration, borehole and gravity data, this paper further determines the spatial distribution of the eastern section of Cixian-Daming fault and the buried depth of breakpoints on the fault. It is considered that the fault has the characteristics of segmented activity, and the latest activity age is the middle late Pleistocene. It is speculated that Cixian-Daming fault extends eastward to the south of Gucheng Town, Fanxian county.