“Peak crosscorrelation scan re-registration” algorithm aiming at the recovery of the distorted OCT images is proposed in this paper. The image distortion related factors are analysed theoretically. Digital filtering allows the distortion information to be derived from the peak crosscorrelation functions. A gray threshold is set to avoid the influence of the noise in crosscorrelation. To reduce unexpected misregistration induced re-registration fault, the maximum value of re-registration is limited, as a result the fault-tolerance of the algorithm is greatly improved. In addition, the paper also gives the distorted images and the restored ones, together with the suggestions to decrease the cumulating errors of the algorithm.