1. A method of automatically repairing cracks having a first step for obtaining the rough position information on the cracks, which is the information of the presence and absence of cracks and the position thereof, by processing the wide field image obtained by taking the picture of the member to be repaired in a wide field of view, and a second step for obtaining the crack data at a series of points along the cracks, which is the information of the position, width, and depth of the cracks at each point having a spacing predetermined along the cracks and is determined by processing the narrow field image of the cracks photographed at each point spaced by the predetermined spacing based on said rough position information.