Shiziyang Fault is located in the east of the Pearl River Estuary, and it is a North-west buried fault. In order to further study the Shiziyang fault, the ground recourse (field seismic geological survey), shallow artificial seismic shear wave/p-wave reflection exploration, drilling contrast, quaternary strata chronology methodare used to investigatethe precise location andactivity of Shiziyang fault. The conclusionsare as follows: the fracture from F1 to F4 Normal faults, four forms as Shiziyang Fault fracture, fault general trend of SW, F4 tended to NE, angle 60° ~ 80°. The Shiziyang Fault (east branch F1,F2,F3) has not been active since the Late Middle Pleistocene, and is a Early-middle Pleistocene fault.