This article analyzed the characteristics of the recent fault deformation of Yishu fault zone with the best approximate general polynomial curve fitting and rate synthesis method. The result shows: The vertical and the horizontal deformation rates of Yishu fault zone and its northwestern fracture were relatively small. There was no obvious abnormal rate.Same fracture had the segmented movement character and there were some differences of the movement rates at different time intervals.For the same facture, the horizontal deformation rate was greater than the vertical deformation rate.