Magnesium alloy sacrificial anode is made of high quality raw materials, anode potential is negative, the unit mass of electricity generation is large, is the ideal sacrificial anode material. Suitable for cathodic protection of metal structures in soil, fresh water and sea water, such as oil and gas pipelines, storage tanks, hot water exchangers, condensers and so on. Magnesium alloy sacrificial anodes are produced according to the national standard GB/T17731.2004 "Magnesium Alloy sacrificial anodes", and the anodes used for pipelines comply with SY/T0019-97 "Design Code for cathodic Protection of sacrificial anodes for Buried Steel Pipelines".