At present, there are many materials for construction on the market. Color steel plate is one of them. It is convenient to use and has good effect. However, in the process of handling, installation and use, some conditions may lead to scratch and damage. We need to repair the color steel plate in time, because the damaged position not only affects the beauty but also does not affect the service life, because the damaged position is easy to rustFor the color steel plate with small damaged surface, the work is relatively simple. Cloth wheel can be used for light polishing and then coated with antirust oil for storage. Then the surface coating process should be carried out. Attention should be paid to the quality and color difference of the paint surface. In addition, some degreasing work should be done when spraying. If the repair does not carry out painting work, the direct use effect is not very good, this is because the rust resistance of the plate is not improved without paint protection, especially in some salt fog, acid and alkali environment, it will rust quickly.