The invention relates to an artificial corner reflector for SAR (synthetic aperture radar) interferometry calibration. The artificial corner reflector comprises a corner reflector and a base adjustingdevice. The base adjusting device is connected with the corner reflector, and is used for carrying out multi-directional adjustment on the corner reflector. The corner reflector is a triangular pyramid structure having a folding hinge device; and after observation, the whole corner reflector is folded into a triangle plane through the hinge device. The base adjusting device comprises a longitudinal angle adjusting device, a latitudinal angle adjusting device, a pitch angle adjusting device and a tripod. The tripod is a steel tripod, and serves as a part connecting to the ground. The artificial corner reflector is suitable for calibration for surface deformation monitoring of ground subsidence and ground fracture in a plain area, has the advantages of being detachable, waterproof, high inprecision, easy to adjust and high in reliability and the like, and lays the foundation for the follow-up calibration and surface micro-deformation monitoring work.