Cathode layout structure for micro-arc oxidation

The utility model belongs to the technical field of micro-arc oxidation, and provides a cathode layout structure for micro-arc oxidation, which comprises an oxidation tank, two groups of cathode plate main bodies are longitudinally and symmetrically arranged in the oxidation tank, and each group of cathode plate main bodies comprises two cathode plate main bodies; a group of cathode plate main bodies are transversely arranged at the bottom of the oxidation tank; the number of the cathode plate main bodies is five, and a cathode plate baffle is arranged between each group of cathode plate main bodies which are longitudinally arranged and is used for optimizing the layout of a power line; by arranging the five cathode plate main bodies, four cathode plate main bodies are arranged in the longitudinal direction, and one cathode plate main body is arranged in the transverse direction, compared with traditional two cathode plate main bodies and five cathode plate main bodies, the micro-arc oxidation process of mult