Sacrificial anode with novel structure

The utility model relates to a sacrificial anode with a novel structure, which is a hexahedron. The sacrificial anode is characterized in that the hexahedron is a special-shaped body, at least one surface of the hexahedron is an arc-shaped surface, preferably, the sacrificial anode is provided with two arc-shaped surfaces, the two arc-shaped surfaces are bent to the same direction, and more preferably, the bending degree of each arc-shaped surface can be similar to that of a steel part to be protected. Compared with the prior art, the sacrificial anode is the hexahedron, at least one surface of the hexahedron is the arc-shaped surface, the ratio of the superficial area of the sacrificial anode to the volume thereof can be effectively increased, accordingly, the efficiency of the sacrificial anode is improved, material cost is saved, and the bending degree of each arc-shaped surface is similar to that of the steel part to be protected, so that cathode protecting current densities on arc-shaped sections are uni