Corrosion protective coatings have been widely applied as a surface treatment to prevent corrosion of various metallic materials, such as carbon steels, aluminum alloys and magnesium alloys. One of the important characteristics which is required in the corrosion protective coatings is the self-healing ability. The self-healing coatings mean that when mechanical damage occurs and corrosive substances in the environment begin to degrade the bare metal surface, the damaged surface is repaired automatically by the chemical composition of the coating. This paper describes recent results which are developed self-healing coatings using the cellulose nanofibers and their network structure.