The present invention provides a method for selecting a coating for forming a substrate and a method for repairing a coating selected by means of the method; the coating for forming a substrate is the most suitable coating for a substrate layer arranged under a repairation coloring substrate coating, under the condition of less coating times, a multiple-layer repairation coating can also be obtained with the appearance of the target coating layer. The selecting method is characterized in that the coating for forming substrates is used for forming a substrate layer arranged under a coloring substrate coating, the coloring substrate coating is formed by repairation coloring substrate coating which is used for repairing a curing coating provided with the coloring substrate; the coating for forming substrate is selected from three coatings (A1) to (A3) for forming the substrate, and the absolute value of the difference between the average value of the spectral reflectance of the formed substrate layer and the average value of the spectral reflectance of the colored substrate cured coating to be repaired is the smallest.