A method for repairing scar images is provided, in which a facial region of an image is detected, a first average skin tone value is subtracted from an original pixel value of at least one pixel to generate a first mask value, the first mask value is divided by a constant to generate a first modified mask value; and the first modified mask value is added to the first average skin tone value to generate a first pixel value to serve as a compensated scar pixel value of the pixel.