1. An image repairing method, comprising: processing image blocks which are initially registered to acquire connection curves between the image blocks; constructing a circuital field of an image to be repaired by means of the connection curves; registering the image blocks by minimizing energy of the connection curves in the circuital field; and performing image filling on the image blocks which are registered to acquire a repaired image, wherein the processing of image blocks further comprises: acquiring the image blocks which are initially registered, wherein the image blocks are acquired from the image to be repaired; acquiring highlight curves in the image blocks inwardly along edges of the image blocks which are initially registered; and acquiring interrelated highlight curves according to the highlight curves and acquiring the connection curves between the interrelated highlight curves.