The shape of the ribbon anode is flat, the length can be adjusted, and it is easy to bend. These characteristics can make it have a unique application in cathodic protection engineering, especially in the short-term of long-distance pipelines, crossing pipelines, large storage pipelines, crossing pipe sections, large storage tank bottoms, grounding grids for lightning protection, and composite anodes. Magnesium belts such as anodes are mainly suitable for the coiled body to be protected, the surface with narrow construction space, and the medium of high resistivity soil, fresh water and other media.