Abstract:From the results combined with geology, geophysics and fine positioning of small earthquakes, the fault segment parameters were selected reasonably and the a certain scope of differences in Xiaojiang fault segments was set, and the deformation of fault segments was analyzed using GPS data. The analyzing results show that the fault parameters have relatively big impact on the inversion results, and the calculated dislocation difference is up to 3mm. In the case of difficultly defining fault parameters, the processing with scan line method could more accurately reflect the deformation of the fault, to a certain extent.