Abstract: It is believed by the theory of tectonics that the area of the Antarctic Peninsulastands where the plates meet. In the area of the South Shetland Island area of the KingGeorge Island where the Great Wall Station locates, faults and rifts make the crustalmovement active, especially the Fildes Peninsula. The large fault of the Fildes Straitis a long developed and active fault. By using modern high precision geodetic technique,a crustal deformation monitoring net was established in the fault area. This paper desc-ribes the strength analysis of the monitoring net, and the analysis and processing of themonitoring results for the horizontal displacement. Finally, it gives the tentative conclu-sion that the local rift-crack system of fhe Fildes Peninsula has the tendency of move-ment.