With the development of industry, the amount of organic wastewater discharged is increasing day by day, especially high concentration wastewater discharged from industries such as chemistry, video, pesticides, and medicine, which has high chromaticity and toxicity, contains a large amount of difficult to decompose components, and seriously pollutes rivers, lakes, and seas. The new technology of electrolysis for water treatment does not require the addition of chemical agents, has a small equipment volume, does not occupy a large area, and does not produce secondary pollution. It has been used to treat organic pollutants such as hydrocarbons, alcohols, aldehydes, ethers, phenols, etc. in wastewater. The removal of COD mainly relies on the oxidation reaction on the anode surface, which directly oxidizes and degrades organic matter on the anode surface. The anode potential must be higher than the decomposition potential of organic matter, so two competitive reactions, organic oxide and oxygen evolution, are carried out on the anode.